The authors, from a number of institutions including Chelsea & Westminster Hospital NHS Foundation Trust, said case definitions should be reviewed to avoid cases being overlooked, particularly as monkeypox can “mimic” other common sexually transmitted infections (STI) like herpes and syphilis. The study also found that a quarter of the monkeypox patients were HIV positive, and a quarter had another STI.
“Misdiagnosis of the infection may prevent the opportunity for appropriate intervention and prevention of onward transmission,” said Dr Ruth Byrne, from the trust.
Monkeypox spreads through close contact, and researchers are working to establish whether it can also be transmitted via semen, the classic definition of sexual transmission.
David Heymann, an infectious diseases epidemiologist and WHO advisor on the outbreak, said it was important to control the spread without stigmatizing those affected.
“That includes working with populations at the greatest risk to try to help them understand how easy it is to prevent this infection – just by avoiding physical contact in the genital area [when a rash is present],” he told Reuters.