Although WHO said nearly 200 monkeypox cases have been reported, that seemed a likely undercount. On Friday, Spanish authorities said the number of cases there had risen to 98, including one woman, whose infection is “directly related” to a chain of transmission that had been previously limited to men, according to officials in the region of Madrid.
During a public briefing on Friday, the U.N. health agency said there are still many unanswered questions about what triggered the unprecedented outbreak of monkeypox outside of Africa, but there is no evidence that any genetic changes in the virus are responsible.
“The first sequencing of the virus shows that the strain is not different from the strains we can find in endemic countries and (this outbreak) is probably due more to a change in human behaviour,” said Dr. Sylvie Briand, WHO’s director of pandemic and epidemic diseases.
Earlier this week, a top adviser to WHO said the outbreak in Europe, U.S., Israel, Australia and beyond was likely linked to sex at two recent raves in Spain and Belgium. That marks a significant departure from the disease’s typical pattern of spread in central and western Africa, where people are mainly infected by animals like wild rodents and primates, and outbreaks haven’t spilled across borders.
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