Recent CDC Catch-Up Recommendations and the Pediatric/Adolescent Hepatitis A Vaccination Gap (September 2020)


CCPA Purchasing Partners and Merck would like to notify members that the Centers for Disease Control and Prevention (CDC) has issued updated recommendations for hepatitis A virus (HAV) catch-up vaccination.

The CDC now recommends that all unvaccinated persons 12 months through 18 years old should complete the 2-dose series. Patients who previously received one dose at age 12 months or older should receive a second dose at least six months after the first.

Recent studies have shown that a significant proportion of adolescents and children in the U.S. who received a first dose of HAV vaccine never received the second dose.

Current recommendations for the HAV vaccination can be found at or at

If you would like to discuss this and other resources, please contact your Merck vaccine representative or the Merck Vaccines Customer Center at 877.VAX.MERCK (877.829.6372).

For assistance or further questions regarding this update, please contact CCPAPP at or by phone at 312.227.7444. CCPAPP's pricing for Merck vaccines can be found on the Pricing Page of our website. Members will need their username and password to access the information.


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