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Home > Smallpox Report

Smallpox Vaccination Program Report
Status and Adverse Events

Safety Assessment
Preliminary data about health events following smallpox vaccination are provided to the Vaccine Adverse Event Reporting System (VAERS). These data include cases currently under investigation. Numbers and classification of the adverse events may change as more information becomes available. A more detailed description will be provided in periodic MMWR reports.

Adverse events reported following smallpox vaccination may be coincidental illnesses that would have occurred anyway or may be caused by the vaccine. The Centers for Disease Control and Prevention (CDC) and local health officials will make every effort to follow up reported adverse events and will report findings of investigations in the MMWR. Adverse events can affect persons who were vaccinated as well as persons who have come into close contact with them.

CDC has made changes to the format of the safety assessment tables on this website in order to provide more detail about adverse event reports and make it easier to compare the tables to more detailed reports provided periodically in the MMWR.

For more information, visit this CDC smallpox web site.

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This page last updated March 7, 2005

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