New study suggests monkeypox outbreak may be fueled in part by pre-symptomatic transmission

A new British study suggests people who are infected with monkeypox may be able to transmit the virus to others before they develop noticeable symptoms of the disease — and that this type of transmission could account for a sizable portion of infections in the current international outbreak.

Experts who reviewed the new analysis, published Wednesday in the journal BMJ, praised the rigor of the work, but warned that it cannot be considered the final answer on whether pre-symptomatic transmission occurs and if it does, to what degree it happens. More and different types of studies are needed to flesh out this question, they said.

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