Washington: The United States has been hit hard by the largest ever outbreak of West Nile virus, spread mostly by mosquito bites, that has killed 47 people and infected an estimated 95,000 in 38 states.The number of cases so far this year is the highest recorded through August since the disease was first detected in the United States in 1999, according to the Centres for Disease Control and Prevention (CDC)."The number of West Nile disease cases in people has risen dramatically. We are in the midst of one of the largest West Nile outbreaks ever seen," Lyle R. Petersen, director of the CDC`s division of vector-borne diseases, said at news teleconference Wednesday.And it`s far from over, noted WebMD, a health website, as right now, the US is in the middle of mosquito season -- and nearly all West Nile virus infections come from mosquito bites. Case counts usually rise through September.
Giving up sleep to study can lead to academic problems
Five more swine flu cases reported from Lucknow