The US has seen the highest number of cases by this point in the year since 2004
A record number of West Nile virus cases have been recorded for this time of year, the CDC warned on Wednesday ahead of the upcoming holiday weekend.
West Nile virus season is off to its earliest and worst start since 2004
According to the US Centers for Disease Control and Prevention, the nation is seeing the earliest start to West Nile virus season in more than two decades.