The Louisiana Department of Health reported the first human cases of West Nile virus (WNV) for this year.

The Louisiana Department of Health reported the first human cases of West Nile virus (WNV) for this year.

Sixteen horses have tested positive for Eastern equine encephalitis (EEE) and one has tested positive for West Nile virus (WNV).

A ninth person in Massachusetts has contracted the potentially fatal Eastern equine encephalitis (EEE) virus. Tests confirmed a man in his 70s from Essex County contracted the virus, according to the state Department of Public Health.