UKHSA’s head of medical entomology, Dr Jolyon Medlock, said: “There is no evidence that these mosquitoes have caused human infections and importantly, to date, there is no evidence of the mosquitoes or larvae being detected in nearby public areas” while Dr César López-Camacho, from Nuffield Department of Medicine at the University of Oxford, said this was an “important finding” but not an occasion to be alarmed.