SPOKANE, Wash. -

A human case of West Nile virus was likely acquired in Spokane County according to a press release sent out Monday by the Spokane Regional Health District (SRHD).

The case, which was confirmed by the Washington State Public Health Laboratory, occurred in a man in his 40s who was hospitalized but has since recovered.

Four horses were also diagnosed with the virus, likely originating in Spokane County as well. Washington Animal Disease Diagnostic Lab confirms that two of those horses have recovered.

The virus is spread through mosquito bites. Types of mosquitoes found in Spokane are capable of transmitting West Nile.

SRHD recommends home and property owners should drain any standing water at least twice a week to keep mosquitoes from breeding.

Symptoms of West Nile include headache, fever, neck discomfort, and muscle and joint aches, and develop two to 14 days after being bitten by an infected mosquito. There is currently no West Nile virus vaccine for humans.