Equine West Nile virus cases almost triple in past month, exceed 500 in U.S.: Veterinarians, officials continue to encourage vaccination to stave off infection, expect new cases to decline

摘要

In early September, 187 cases of equine West Nile virus were reported nationwide, according to the U.S. Geological Survey's disease maps. Just one month later, that number soared to 518, according to a report posted on October 16. The U.S. Departmentof Agriculture Animal and Plant Health Inspection Service (USDA-APHIS) released a similar report in early October showing that the mosquito-borne virus is a much greater problem this year, having far surpassed 2011's reoport of 87 cases.