![]() Primary immunization is achieved with 1 dose of monovalent HA vaccine with a booster dose given 6 to 36 months later, depending on the product.co-workers and clients of infected food handlers.contacts in group child care centres and kindergartens.household and close contacts of people infected with HA.Post-exposure prophylaxis should be offered to susceptible:.Zoo-keepers, veterinarians and researchers who handle non-human primates.Workers involved in research on HA virus or production of HA vaccine who may be exposed to HA virus.People receiving repeated replacement of plasma-derived clotting factors.Military personnel and humanitarian relief workers.Household or close contacts of children adopted from HA-endemic countries.Individuals living in communities at risk of HA outbreaks or in which HA is endemic.Injectable and non-injectable illicit drug users.Pre-exposure HA immunization is recommended for people at increased risk of infection or severe HA including:.Reactions to HA vaccine are generally mild and transient and include soreness and redness at the injection site.Pre-exposure HA immunization is at least 90% to 97% effective.Hepatitis A (HA) infection usually causes clinical hepatitis in adults and older children it often causes a febrile illness without jaundice or is asymptomatic in younger children.Table 2: Options for Completing Hepatitis A Vaccination Series in Adults, Children and Adolescents.Table 1: Dosages and Schedules for Hepatitis A-containing Vaccines.Immunogenicity, Efficacy and Effectiveness.Preparations Authorized for Use in Canada.Last complete chapter revision: March 2018 (see table of updates) On this page This information is captured in the table of updates. The immunoglobulin dosage for Hepatitis A pre-exposure and post-exposure prophylaxis was increased based on the Product Monograph update for GamaSTAN ®, which is available on Health Canada's Drug Product Database. Last partial content update: November 2021
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