Exhibit 99.1

                       [LOGO OF AMERIGROUP(R) CORPORATION]

                                  PRESS RELEASE

A M E R I C A I D .  A M E R I K I D S  .  A M E R I F A M  .  A M E R I P L U S
- --------------------------------------------------------------------------------
AMERIGROUP CORPORATION . 4425 CORPORATION LANE . VIRGINIA BEACH, VIRGINIA 23462
                      757 490 6900 . WWW.AMERIGROUPCORP.COM

CONTACTS
Investors:  Julie Loftus Trudell                    News Media: Kent Jenkins Jr.
Vice President, Investor Relations                Vice President, Communications
AMERIGROUP Corporation                                    AMERIGROUP Corporation
(757) 321-3597                                                    (757) 518-3671

           AMERIGROUP CORPORATION REPORTS FOURTH QUARTER NET EARNINGS
$0.14 PER SHARE NET OF PRIOR PERIOD FAVORABLE DEVELOPMENT AND CHANGE IN TAX RATE

            FULL-YEAR NET INCOME OF $53.7 MILLION AND $1.02 PER SHARE

Virginia Beach, VA (February 15, 2006) - AMERIGROUP Corporation (NYSE: AGP)
today announced net income for the fourth quarter of 2005 of $12,920,000, or
$0.25 per diluted share, compared with net income of $22,397,000, or $0.43 per
diluted share, for the fourth quarter of 2004. The fourth quarter reflects the
impact of the moderation of cost trends resulting in an estimated $7,000,000
favorable prior period medical claims development, or $0.08 per diluted share,
related to the first nine months of 2005. Fourth quarter results also include a
$0.03 per diluted share benefit from a decreased tax rate reflecting a reduction
in the blended state income tax rate. Excluding the impact of the favorable
prior period medical claims development and reduced tax rate, fourth quarter
earnings would have been $0.14 per diluted share.

For the year ended December 31, 2005, net income was $53,651,000, or $1.02 per
diluted share, compared with $86,014,000, or $1.66 per diluted share for the
year ended December 31, 2004.

Total revenues for the fourth quarter of 2005 increased 26.5 percent to
$620,282,000, compared with $490,323,000 for the fourth quarter of 2004. For the
year ended December 31, 2005, revenues totaled $2,329,909,000, up 27.8 percent
from $1,823,731,000 for the year ended December 31, 2004, reflecting 15.1
percent organic premium revenue growth.

Membership increased approximately 20.6 percent, or 193,000 members, to
1,129,000 at December 31, 2005, as compared with 936,000 members at December 31,
2004, an increase of 30,000 members, or approximately 2.7 percent, from
September 30, 2005.

Highlights for the fourth quarter and year:

o   Won approval to offer Medicare Special Needs Plan (SNP) in Houston;
o   Entered New York, the largest Medicaid market;
o   Successful bidder in the largest Medicaid procurement in several years, in
    Georgia;
o   Started new health plans in Virginia and Ohio;

                                     -MORE-


Page 2
February 15, 2006

o   2005 total revenues of $2,329,909,000 reflecting organic premium revenue
    growth of 15.1 percent;
o   Sequential organic membership at December 31, 2005, increased by 30,000
    members, or approximately 2.7 percent, from September 30, 2005, driven
    primarily by new markets;
o   Fourth quarter health benefits ratio of 84.6 percent, or 85.7 percent
    excluding the impact of the favorable prior period medical claims
    development, and full-year 2005 health benefits ratio of 84.7 percent;
o   Selling, general and administrative expenses of 12.1 and 11.1 percent of
    total revenues for the fourth quarter and full-year 2005, respectively;
o   Unregulated cash and investments of $157,902,000; and
o   Cash flow from operations of $113,105,000 for the full-year 2005.

Commenting on the results, Jeffrey L. McWaters, Chairman and CEO of AMERIGROUP
Corporation, said, "While we are pleased that we had a number of solid
accomplishments in 2005, what is more critical is that we concentrated on the
issues that negatively affected our business during the year. Looking ahead, our
goal is to build upon our efforts and continue the positive momentum established
in the fourth quarter of this year. Namely, during 2005 we began operations in
three new states, including New York, the largest Medicaid market, and entered
into important new programs that will enable us to continue growing in the years
ahead. The opportunities we secured in Georgia's Medicaid managed care program,
the Texas RFP win and Medicare's new Special Needs Plan initiative in Houston
are especially important for us strategically."

HEALTH BENEFITS

Health benefits as a percent of premium revenues were 84.6 percent for the
fourth quarter of 2005 versus 81.8 percent for the fourth quarter of 2004.
Excluding the impact of the favorable prior period medical claims development
for the first nine months of 2005, the fourth quarter health benefits ratio
would have been 85.7 percent. For the full-year 2005, the health benefits ratio
was 84.7 percent compared to 81.0 percent in 2004.

With three more months of paid claims data, our internal actuaries in
conjunction with our external actuaries now estimate that the increase in the
health benefits cost trend for the third quarter of 2005 was lower than
previously estimated. The reduction of the health benefits trend is primarily
due to changes in estimates of unit costs and frequency of claims, which had the
effect of lowering medical claims expenses in the fourth quarter related to the
first nine months of the year by approximately $7,000,000.

We have enhanced our medical claims liability estimation processes in the fourth
quarter to reflect:

o   The reduction in the rate of claims processing that typically occurs due to
    a decrease in payment efficiencies associated with the installation of a new
    medical claims payment system. As discussed previously, our Texas market,
    which represents 35 percent of our membership, converted to FACETS effective
    October 1, 2005.

                                     -MORE-


Page 3
February 15, 2006

o   A separate factor for uncertainty to cover the impact of adverse changes in
    the number and nature of the claims inventory associated with the FACETS
    conversion. We will maintain this additional factor for claims uncertainty
    as long as the uncertainty related to the systems conversion remains.

CHANGE IN MEDICAL CLAIMS PAYABLE

The following table shows the components of the change in medical claims payable
for the years ended December 31, 2005 and 2004 (in thousands):



                                                               2005            2004
                                                          -------------   -------------
                                                                    
Medical claims payable as of January 1                    $     241,253   $     239,532
Medical claims payable assumed from businesses acquired
   during the year                                               27,424              --
Health benefits expenses incurred during the year:
   Related to current year                                    1,982,880       1,505,482
   Related to prior years                                       (25,684)        (36,385)
                                                          -------------   -------------
      Total incurred                                          1,957,196       1,469,097
Health benefits payments during the year:
   Related to current year                                    1,646,664       1,274,460
   Related to prior years                                       230,530         192,916
                                                          -------------   -------------
      Total payments                                          1,877,194       1,467,376
                                                          -------------   -------------
Medical claims payable as of December 31                  $     348,679   $     241,253
                                                          =============   =============


In the current year, we experienced a reduction in the favorable prior year
development of $10,701,000 related to 2004 and prior. The current year reduction
resulted from continued tightening of claims estimates at December 31, 2004.

SELLING, GENERAL AND ADMINISTRATIVE EXPENSES

The selling, general and administrative expense ratio was 12.1 percent of total
revenues for the fourth quarter of 2005 versus 10.3 percent in the fourth
quarter of 2004. The increase is primarily due to several components, including
an increase in premium taxes in certain states; legal fees; experience rebate
expenses in Texas; development costs in Georgia and elsewhere; and actuarial and
other consulting services. For the full-year 2005, the selling, general and
administrative expense ratio was 11.1 percent versus 10.5 percent in 2004.

EFFECTIVE TAX RATE

The effective tax rate was 31.7 percent for the fourth quarter of 2005 versus
38.3 percent in the fourth quarter of 2004. For the full-year 2005, the
effective tax rate was 38.1 percent versus 39.1 percent in 2004. These decreases
are primarily due to a reduction in the blended state income tax rate. The
fourth quarter reduction in our annual effective tax rate positively impacted
the fourth quarter by $1,549,000, or $0.03 per diluted share.

                                     -MORE-


Page 4
February 15, 2006

BALANCE SHEET AND CASH FLOW HIGHLIGHTS

Cash and investments at December 31, 2005, totaled $643,763,000, of which
$157,902,000 was unregulated. Medical claims liabilities totaled $348,679,000,
representing 62 days in claims payable versus 51 days in the previous quarter
due primarily to the conversion of our medical claims payment system. A
reconciliation of the Company's change in days in claims payable from the third
quarter of 2005 is presented below:

       Days in claims payable at September 30, 2005                51 days
       Increase in level of unpaid claims                           8 days
       Effect of reclassifying provider receivable                  3 days
                                                                 ---------
       Days in claims payable at December 31, 2005                 62 days

Cash flow from operations for the year ended December 31, 2005, totaled
$113,105,000, compared to $102,060,000 for the year ended December 31, 2004.

2006 ESTIMATES

Commenting on the fourth quarter and 2006 estimates, Jeffrey L. McWaters said,
"Our health benefit costs remain at a higher than acceptable level, yet it is
early in our operational improvement efforts. We have much work yet to do, but
we believe we have laid a strong foundation on which to build in 2006 and
beyond."

AMERIGROUP is issuing its 2006 annual earnings estimates with earnings per
diluted share in the range of $0.70 to $0.85, which reflects compensation
expense of $0.09 for SFAS 123(R), the new accounting rules for stock
compensation, effective January 2006.

Estimates assume an annual health benefit cost trend of 7.0 percent for 2006
(net of changes in member and product mix), based on estimates by external
actuaries, which represents a reduction from our 2005 annual health benefit cost
trend of 10.0 percent. In addition, achievement of the 2006 annual earnings
estimates is dependent upon successful implementation of operational
improvements to reduce the gap between the estimated trend of approximately 7.0
percent and expected rate increases of approximately 4.0 percent.

Estimates are predicated on the timing of our expansions into the State of
Georgia and the Houston SNP program and the assumption that they operate at
underwritten levels. Additionally, these estimates include the following
assumptions:

o   Organic premium revenue growth in the range of 20.0 to 25.0 percent, which
    includes weighted-average rate increases of approximately 4.0 percent;
o   Health benefits of approximately 86.0 percent of premium revenues for the
    full year;
o   Selling, general and administrative expenses of approximately 11.0 percent
    of total revenues which include the necessary expenses to build our
    infrastructure essential to complete operational improvement efforts and
    support future growth. Excluding premium taxes, selling, general and
    administrative expenses are estimated to be less than 9.5 percent;
o   Compensation expense of $0.09 for SFAS 123(R), spread evenly throughout the
    year;

                                     -MORE-


Page 5
February 15, 2006

o   Income tax rate of approximately 40.0 percent; and
o   Fully diluted shares outstanding of approximately 52,600,000.

AMERIGROUP senior management will discuss the Company's fourth quarter and year
ended December 31, 2005, results on a conference call, Thursday, February 16th,
at 8:30 a.m. Eastern Time. The conference can be accessed by dialing
800-289-0569 (domestic) or 913-981-5542 (international) and providing passcode
9931048 approximately ten minutes prior to the start time of the call. A
recording of the call may be accessed by dialing 888-203-1112 (domestic) or
719-457-0820 (international) and providing passcode 9931048. The replay will be
available beginning Thursday, February 16, at 12:00 p.m. Eastern Time until
Thursday, February 23, at 11:59 p.m. Eastern Time. The conference call will
also be available through the investors page of the Company's Web site,
www.amerigroupcorp.com, or through www.earnings.com. A 30-day replay of this
webcast will be available on these Web sites approximately two hours following
the conclusion of the live broadcast.

AMERIGROUP Corporation, headquartered in Virginia Beach, Virginia, improves
healthcare access and quality for low-income Americans by developing innovative
managed healthcare services for the public sector. Through its wholly owned
subsidiaries, AMERIGROUP serves more than 1 million people and operates in
Florida, Georgia, Illinois, Maryland, New York, New Jersey, Ohio, Texas,
Virginia and the District of Columbia. For more information, visit
www.amerigroupcorp.com.

                                   ----------

This release is intended to be disclosure through methods reasonably designed to
provide broad, non-exclusionary distribution to the public in compliance with
the Securities and Exchange Commission's Fair Disclosure Regulation. This
release contains certain "forward-looking" statements, including statements
related to expected 2006 performance such as membership, revenues, organic
premium revenues, rate increases, operating cash flows, health benefits
expenses, trend levels, our ability to manage our medical costs generally,
seasonality of health benefits expenses, selling, general and administrative
expenses, days in claims payable, income tax rates, earnings per share, and net
income growth, as well as expectations of our successful implementation of
operational improvements and expectations on the effective date and successful
integration of any pending acquisition as well as expansions and debt levels,
made pursuant to the Safe Harbor provisions of the Private Securities Litigation
Reform Act of 1995. Forward-looking statements involve known and unknown risks
and uncertainties that may cause the Company's actual results in future periods
to differ materially from those projected or contemplated in the forward-looking
statements. These risks and uncertainties include, but are not limited to,
national, state and local economic conditions, including their effect on the
rate-setting process, timing of payments, as well as the availability and cost
of labor, utilities and materials; the effect of government regulations and
changes in regulations governing the healthcare industry, including our
compliance with such regulations and their effect on our ability to manage our
medical costs; changes in Medicaid payment levels, membership eligibility and
methodologies and the application of such methodologies by the government;
liabilities and other claims asserted against the Company; our ability to
attract and retain qualified personnel; our ability to maintain compliance with
all minimum capital requirements; the availability and terms of capital to fund
acquisitions and capital improvements; the competitive environment in which we
operate; our ability to maintain and increase membership levels; and demographic
changes.

Investors should also refer to our Annual Report on Form 10-K for the year ended
December 31, 2004, filed with the Securities and Exchange Commission on March 9,
2005, for a discussion of risk factors. Given these risks and uncertainties, we
can give no assurances that any forward-looking statements will, in fact,
transpire and, therefore, caution investors not to place undue reliance on them.
We specifically disclaim any obligation to update or revise any forward-looking
statements, whether as a result of new information, future developments or
otherwise.

                                     -MORE-


Page 6
February 15, 2006

                     AMERIGROUP CORPORATION AND SUBSIDIARIES
                    CONDENSED CONSOLIDATED INCOME STATEMENTS
                (dollars in thousands, except for per share data)



                                                   THREE MONTHS ENDED                 YEAR ENDED
                                                      DECEMBER 31,                    DECEMBER 31,
                                              -----------------------------   -----------------------------
                                                   2005            2004            2005            2004
                                              -------------   -------------   -------------   -------------
                                                                                  
Revenues:
    Premium                                   $     614,196   $     486,982   $   2,311,599   $   1,813,391
    Investment income and other                       6,086           3,341          18,310          10,340
                                              -------------   -------------   -------------   -------------
        Total revenues                              620,282         490,323       2,329,909       1,823,731
                                              -------------   -------------   -------------   -------------
Expenses:
    Health benefits                                 519,478         398,350       1,957,196       1,469,097
    Selling, general and administrative              75,064          50,576         258,446         191,915
    Depreciation and amortization                     6,688           4,925          26,948          20,750
    Interest                                            132             191             608             731
                                              -------------   -------------   -------------   -------------
        Total expenses                              601,362         454,042       2,243,198       1,682,493
                                              -------------   -------------   -------------   -------------
        Income before income taxes                   18,920          36,281          86,711         141,238
Income tax expense                                    6,000          13,884          33,060          55,224
                                              -------------   -------------   -------------   -------------
        Net income                            $      12,920   $      22,397   $      53,651   $      86,014
                                              =============   =============   =============   =============
    Weighted average number of common
     shares and dilutive potential common
     shares outstanding                          52,148,265      52,552,486      52,857,682      51,837,579
                                              =============   =============   =============   =============
    Diluted net income per share              $        0.25   $        0.43   $        1.02   $        1.66
                                              =============   =============   =============   =============


                                     -MORE-



Page 7
February 15, 2006

The following table sets forth selected operating ratios. All ratios, with the
exception of the health benefits ratio, are shown as a percentage of total
revenues.



                                                THREE MONTHS ENDED       YEAR ENDED
                                                    DECEMBER 31,         DECEMBER 31,
                                               -------------------   -------------------
                                                 2005       2004       2005       2004
                                               --------   --------   --------   --------
                                                                        
Premium revenue                                    99.0%      99.3%      99.2%      99.4%
Investment income and other                         1.0        0.7        0.8        0.6
                                               --------   --------   --------   --------
Total revenues                                    100.0%     100.0%     100.0%     100.0%
                                               ========   ========   ========   ========
Health benefits (1)                                84.6%      81.8%      84.7%      81.0%
Selling, general and administrative expenses       12.1%      10.3%      11.1%      10.5%
Income before income taxes                          3.1%       7.4%       3.7%       7.7%
Net income                                          2.1%       4.6%       2.3%       4.7%


(1) The health benefits ratio is shown as a percentage of premium revenue
    because there is a direct relationship between the premium received and the
    health benefits provided.

The following table sets forth the approximate number of our members we served
in each state as of December 31, 2005 and 2004.

                                                    DECEMBER 31,
                                            ---------------------------
                                                2005           2004
                                            ------------   ------------
      Texas                                      399,000        394,000
      Florida                                    219,000        229,000
      Maryland                                   141,000        130,000
      New York                                   138,000             --
      New Jersey                                 109,000        105,000
      Illinois                                    41,000         37,000
      District of Columbia                        41,000         41,000
      Ohio                                        22,000             --
      Virginia                                    19,000             --
                                            ------------   ------------
         Total                                 1,129,000        936,000
                                            ============   ============

The following table sets forth the approximate number of our members in each of
our products as of December 31, 2005 and 2004.

                                                    DECEMBER 31,
                                            ---------------------------
                    PRODUCT                     2005           2004
      -----------------------------------   ------------   ------------
      AMERICAID (Medicaid--TANF)                 800,000        662,000
      AMERIKIDS (SCHIP)                          197,000        182,000
      AMERIPLUS (Medicaid--SSI)                   88,000         79,000
      AMERIFAM (FamilyCare)                       44,000         13,000
                                            ------------   ------------
          Total                                1,129,000        936,000
                                            ============   ============

                                     -MORE-
Page 8
February 15, 2006

                     AMERIGROUP CORPORATION AND SUBSIDIARIES
                      CONDENSED CONSOLIDATED BALANCE SHEETS



                                                                               DECEMBER 31,
                                                                       ---------------------------
                                                                           2005           2004
                                                                       ------------   ------------
                                                                             (in thousands)
                                                                                
                               ASSETS
Current assets:
    Cash and cash equivalents                                          $    272,169   $    227,130
    Short-term investments                                                  130,054        176,364
    Premium receivables                                                      76,142         44,081
    Deferred income taxes                                                    11,972         11,019
    Prepaid expenses, provider receivables and
     other current assets                                                    37,792         18,737
                                                                       ------------   ------------
        Total current assets                                                528,129        477,331
Property, equipment and software, net                                        61,664         50,298
Goodwill and other intangible assets, net                                   255,115        140,382
Long-term investments, including investments on
 deposit for licensure                                                      241,540        246,930
Other long-term assets                                                        7,140          4,909
                                                                       ------------   ------------
                                                                       $  1,093,588   $    919,850
                                                                       ============   ============
               LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
    Claims payable                                                     $    348,679   $    241,253
    Unearned revenue                                                         32,598         34,228
    Accounts payable                                                          7,243          4,826
    Accrued expenses, capital leases and other
     current liabilities                                                     46,350         56,842
                                                                       ------------   ------------
        Total current liabilities                                           434,870        337,149
Deferred income taxes, capital leases and other
 long-term liabilities                                                       17,164         13,989
                                                                       ------------   ------------
        Total liabilities                                                   452,034        351,138
                                                                       ------------   ------------
Stockholders' equity:
    Common stock, $.01 par value                                                516            505
    Additional paid-in capital                                              371,744        352,417
    Retained earnings                                                       269,294        215,790
                                                                       ------------   ------------
        Total stockholders' equity                                          641,554        568,712
                                                                       ------------   ------------
                                                                       $  1,093,588   $    919,850
                                                                       ============   ============

                                     -MORE-



Page 9
February 15, 2006

                     AMERIGROUP CORPORATION AND SUBSIDIARIES
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS



                                                                               YEAR ENDED
                                                                               DECEMBER 31,
                                                                       ---------------------------
                                                                           2005           2004
                                                                       ------------   ------------
                                                                             (in thousands)
                                                                                
Cash flows from operating activities:
    Net income                                                         $     53,651   $     86,014
    Adjustments to reconcile net income to
      net cash provided by operating activities:
        Depreciation and amortization                                        26,948         20,750
        (Gain) loss on disposal or abandonment of property,
          equipment and software                                                (61)           971
        Deferred tax (benefit) expense                                       (1,247)         2,878
        Amortization of deferred compensation                                    --             57
        Tax benefit related to option exercises                               8,571          8,009
        Changes in assets and liabilities increasing
         (decreasing) cash flows from operations:
         Premium receivables                                                (26,234)        (5,822)
         Prepaid expenses, provider receivables and other
          current assets                                                    (15,919)        (2,742)
         Other assets                                                        (1,074)          (941)
         Claims payable                                                      80,002          1,721
         Unearned revenue                                                    (1,723)       (20,096)
         Accounts payable, accrued expenses
          and other current liabilities                                      (9,049)         9,234
         Other long-term liabilities                                           (760)         2,027
                                                                       ------------   ------------
            Net cash provided by operating activities                       113,105        102,060
                                                                       ------------   ------------
Cash flows from investing activities:
    Proceeds from the sale of investments, net                               69,845         66,144
    Purchase of investments on deposit for
     licensure, net                                                         (10,265)        (3,019)
    Purchase of property, equipment and software                            (25,819)       (25,727)
    Purchase of contract rights and related assets,
     net of adjustments                                                          --            512
    Acquisition, net of cash acquired                                      (107,645)            --
                                                                       ------------   ------------
            Net cash (used in) provided by investing activities             (73,884)        37,910
                                                                       ------------   ------------
Cash flows from financing activities:
    Payment of capital lease obligations                                     (3,323)        (4,473)
    Payment of debt issuance costs                                           (1,626)            --
    Proceeds from exercise of stock options and
     change in bank overdrafts, net                                          10,767          7,603
                                                                       ------------   ------------
            Net cash provided by financing activities                         5,818          3,130
                                                                       ------------   ------------
Net increase in cash and cash equivalents                                    45,039        143,100
Cash and cash equivalents at beginning of year                              227,130         84,030
                                                                       ------------   ------------
Cash and cash equivalents at end of year                               $    272,169   $    227,130
                                                                       ============   ============