FILE – This 2003 electron microscope image, provided by the Centers for Disease Control and Prevention, shows oval-shaped mature monkeypox virions, left, and spherical immature virions, right, obtained from a human skin sample associated with the prairie dog outbreak of 2003. Associated Press
Monkeypox patients in the UK have markedly different symptoms to those seen in previous outbreaks, according to researchers in London, raising concerns that cases are being missed.
Patients reported lower fever and fatigue and more skin lesions in the genital and anal areas than typically seen with monkeypox, a study of 54 patients at sexual health clinics in London found in May this year.
Monkeypox, a usually relatively mild viral disease that is endemic in several countries in West and Central Africa, has caused more than 5,000 cases and one death outside those areas – mainly in Europe – since early May. Cases have also increased in countries where it usually spreads, according to the World Health Organization.
The London study, published in the Lancet Infectious Diseases Journal, follows suggestions from public health authorities such as the US Centers for Disease Control and Prevention that the outbreak – which is spreading mainly among men who have sex with men – is presenting itself unusually.
The authors, from a range of institutions including Chelsea & Westminster Hospital NHS Foundation Trust, said case definitions needed to be reviewed to avoid cases being overlooked, particularly as monkeypox can ‘mimic’ other common sexually transmitted infections. sexually transmitted infections (STIs) such as herpes and syphilis. The study also found that a quarter of monkeypox patients were HIV positive and a quarter had another STI.
“Misdiagnosis of infection can prevent the ability to intervene appropriately and prevent further transmission,” said the trust’s Dr Ruth Byrne.
Monkeypox is spread through close contact, and researchers are working to determine whether it can also be transmitted through semen, the classic definition of sexual transmission. [L1N2Y20QL]
David Hayman, an infectious disease epidemiologist and WHO adviser on the outbreak, said it was important to control the spread without stigmatizing those affected.
“This includes working with populations at greatest risk to try to help them understand how easy it is to prevent this infection – simply by avoiding physical contact in the genital area [when a rash is present]he told Reuters.
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