Mpox is back – and in new countries. How this outbreak can be contained

The public health emergencies in 2022 and 2024 saw the virus reported in 145 countries, but in the new cases children appear particularly affected

A fresh outbreak of mpox in Guinea Bissau – the country’s first – means the virus formerly known as monkey pox is back in the headlines. So what has changed?

Since 2022, there have been almost 190,000 lab-confirmed cases of mpox reported worldwide in 145 countries. Before then, outbreaks of mpox tended to be relatively small and in a handful of African countries, where the viral infection was known to be endemic.