Wyoming health officials have learned of a second person infected with West Nile virus, they announced Monday.
The case involves a woman in Fremont County, according to Wyoming Department of Health spokeswoman Kim Deti. She did not have additional details on the woman or her medical status.
The virus, which is usually spread by mosquitoes, has also sickened a Platte County woman. Her illness, which was reported last week, was Wyoming’s first human West Nile case of 2013.
Seven cases of West Nile were reported in humans last year in Wyoming.
Between 70 and 80 percent of people who are infected with the virus will never develop symptoms, according to the Centers for Disease Control and Prevention. Others may experience fever, body aches and rashes.
In rare cases, people infected with West Nile can develop serious medical problems that can be fatal.
Health officials say people can protect themselves from West Nile by wearing long-sleeved shirts and full-length pants, avoiding the outdoors at dawn and dusk and using insect repellent.