West Nile virus is spread by mosquitoes that feed on infected birds, such as the woodpecker found in Laramie July 20, then bite people, animals or other birds.
Wyoming travelers, especially pregnant women or those who may become pregnant, are urged to pay attention to Zika-related travel warnings now that the virus has reached Miami, Florida.
The regional office of the United Blood Services is asking potential donors who have traveled to the Caribbean, Mexico, Central and South America not to donate blood for 28 days after leaving those areas, according to a news release.