West Nile virus infections surge in Orange County, California, USA

A localized outbreak of West Nile fever involving 90 cases and 3 deaths has been reported in Orange County. This number is seven times the number diagnosed in all of 2013. Since there is no vaccine or treatment for West Nile fever, travellers to areas where this virus has been found can reduce their risk of exposure by taking all necessary precautions to avoid mosquito bites.