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From the Centers for Disease Control and Prevention |

FDA Approval of VAQTA® (Hepatitis A Vaccine, Inactivated) for Children Aged ≥1 Year FREE

JAMA. 2005;294(18):2296. doi:10.1001/jama.294.18.2296.
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MMWR. 2005;54:1026

On August 11, 2005, the Food and Drug Administration (FDA) approved an application of a pediatric/adolescent formulation of VAQTA® (hepatitis A vaccine, inactivated) (Merck & Co., Whitehouse Station, New Jersey) for use among persons aged 12 months–18 years. Previously, the pediatric/adolescent formulation of VAQTA was approved for use in persons aged 2-18 years. The approved labeling change applies only to VAQTA and not to other licensed hepatitis A vaccines.

The formulation, dosage, and schedule for VAQTA have not changed. Each 0.5 mL dose of the pediatric/adolescent formulation of VAQTA contains approximately 25 units of formalin-inactivated hepatitis A virus antigen, adsorbed onto aluminum hydroxyphosphate sulfate, in 0.9% sodium chloride. The formulation does not contain a preservative.

VAQTA is now indicated for active immunization of persons aged ≥12 months to protect against disease caused by hepatitis A virus. The primary vaccination schedule is unchanged and consists of 2 doses, administered on a 0, 6-18 month schedule. The Advisory Committee on Immunization Practices (ACIP) has issued recommendations for hepatitis A vaccination.1

Results from the study to lower the age indication for VAQTA indicated that 100% of 343 initially seronegative children aged 12-23 months who received 2 doses of VAQTA had seroconverted to antibody levels previously indicated to be protective. The study also indicated that VAQTA may be administered concomitantly with M-M-R II (measles, mumps, and rubella virus vaccine live). Insufficient data are available to evaluate the concomitant use of VAQTA with other routinely recommended childhood vaccines. According to the general recommendations of ACIP, inactivated vaccines generally do not interfere with the immune response to other inactivated or live vaccines.2

In combined clinical trials reported as part of the labeling change application, 706 healthy children aged 12-23 months received ≥1 doses of VAQTA alone or in combination with other routinely recommended pediatric vaccines. The most commonly reported complaints after 1 or both doses of VAQTA were similar to those reported among older children.1 VAQTA is contraindicated in persons with known hypersensitivity to any component of the vaccine.

Additional information is available from the manufacturer’s package insert and at telephone 800-672-6372.

REFERENCES
 Prevention of hepatitis A through active or passive immunization: recommendations of the Advisory Committee on Immunization Practices (ACIP).  MMWR Recomm Rep. 1999;48:(RR-12)  1-37
PubMed
CDC.  General recommendations on immunization: recommendations of the Advisory Committee on Immunization Practices (ACIP) and the American Academy of Family Physicians.  MMWR. 2002;51:(No. RR-2)  1-36

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References

 Prevention of hepatitis A through active or passive immunization: recommendations of the Advisory Committee on Immunization Practices (ACIP).  MMWR Recomm Rep. 1999;48:(RR-12)  1-37
PubMed
CDC.  General recommendations on immunization: recommendations of the Advisory Committee on Immunization Practices (ACIP) and the American Academy of Family Physicians.  MMWR. 2002;51:(No. RR-2)  1-36
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