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Vaccinating less than half of high-risk men may stop monkeypox spread

A modelling study suggests that between 5 and 47 per cent of high-risk men who have sex with men would need to be vaccinated to stop the ongoing monkeypox outbreak

By Michael Le Page

4 August 2022

People queue at a monkeypox vaccination site in Encino, LA in California, in July

People queue at a monkeypox vaccination site in Encino, LA, in California, in July

Marcio Jose Sanchez/AP/Shutterstock

The spread of monkeypox around the world could be stopped by vaccinating less than half of high-risk men who have sex with men, according to a modelling study.

But there is a lot of uncertainty around the numbers used in the model, which also makes optimistic assumptions about the effectiveness of monkeypox vaccines, says Gregg Gonsalves at Yale School of Public Health, a co-author of the study.

Amid the ongoing outbreak, more than 25,000 cases of monkeypox have been confirmed globally.…

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