Last week, the World Health Organization called attention to an mpox outbreak in South Africa. Officials there confirmed 20 cases between May 8 and July 2, with 18 hospitalizations and three deaths.

Another concern is the Democratic Republic of Congo, where an outbreak that began last year has been accelerating — and where the variant is dramatically deadlier than the mpox strain of 2022. About 6% of people who get this type of mpox are dying from it — compared to a 0.2% death rate for the 2022 strain. Most of the deaths in the DRC outbreak are among children.