West Nile Virus Makes A Comeback This Summer

The West Nile virus is back, and it’s looking like it could be particularly bad this year. As as result, federal health officials are warning people to protect themselves against the mosquito-borne infection.

The West Nile virus first showed up in the U.S. in 1999 and quickly spread from coast to coast, raising widespread alarm. Some have argued that red-breasted robins play a key role in the spread of the virus.

As it turns out, most people who get infected never know it or recover after just a bad fever, nasty headache and other symptoms. But about 1 percent of people who get the virus develop serious complications, such as encephalitis or meningitis, which can cause permanent paralysis and even death.