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Screening adds safety to smallpox vaccination. Despite widespread fears about the smallpox vaccine, there were few serious adverse reactions and no known spread to contacts in the first month of the vaccination program.

So far, so good: As vaccinations begin, few serious smallpox reactions emerge

April 1, 2003

Screening adds safety to smallpox vaccination. Despite widespread fears about the smallpox vaccine, there were few serious adverse reactions and no known spread to contacts in the first month of the vaccination program.