A case of Japanese B encephalitis imported into the United Kingdom

A case of acute encephalomyelitis, serologically proven to be due to Japanese B encephalitis virus, is reported. The patient, a 35-year-old woman, contracted the disease whilst in Hong Kong but presented in the United Kingdom. She required ventilatory support and was given high-dose steroids. She recovered from the illness but died after a period of four months from respiratory/cardiac arrest.