Ring vaccination worked for smallpox because a person-to-person pattern of spread makes it possible to predict and interrupt chains of transmission. The process is straightforward: Find the people most at risk of infection, give them shots. But to take those actions today to curb monkeypox, you have to find cases, you have to identify their likely contacts—and, crucially, you have to have vaccines to distribute. So far, in the US, none of those efforts are going well, and epidemiologists, scientists, and experts in LGBTQ sexual health are skeptical that ring vaccination will succeed.
For one thing, the numbers are rising too fast. “If there were five people, we could do
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