As cases of West Nile virus continue to increase, authorities warned today that this could turn out to be the worst outbreak since the virus first showed up in the United States in 1999.
The New York Times reports that the Centers for Disease Control and Prevention is still unsure about "where and how far" the disease will spread, but so far there have been 1,118 cases and 41 deaths reported.
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.