At-risk people who received a single dose of the monkeypox vaccine in U.S. efforts against the virus appeared to be significantly less likely to get sick, public health officials announced Wednesday, even as they urged a second dose for full protection.
It was the first look public health officials have offered into how the Jynneos vaccine is affecting monkeypox, a virus that is primarily spread among men who have sex with infected men.
“These new data provide us with a level of cautious optimism that the vaccine is working as intended,” Rochelle Walensky, director of the Centers for Disease Control and Prevention, said Wednesday.
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