Unverified data about events after vaccinations is not evidence that the vaccine caused the event, as suggested in social media posts making the false claim that the World Health Organization (WHO) ...

ATLANTA (AP) -- Stuck with 30-year-old data about the effects of the smallpox vaccine, federal officials have created a comprehensive system to track and monitor those who may receive the shots. The ...

Vaccines against smallpox given until the mid-1970s offer continuing cross-reactive immunity to mpox (previously known as monkeypox), researchers report. Vaccines against smallpox given until the ...

NASHVILLE, Tenn. (AP) - A week after she was given an experimental dose of smallpox vaccine, Elizabeth Forrester's arm became swollen, her head throbbed and she felt tired and feverish. "At one point ...

years ago, was identified as a possible weapon for terrorists. Under the plan, hospitals would voluntarily create a “first response” team of health-care workers who would be vaccinated in case of a ...