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The Tulsa Health Department announced Friday a confirmed human case of West Nile virus in Tulsa County, the first of 2019.

The announcement comes the same day as the Oklahoma State Department of Health revealed two other cases in Grant and Canadian counties.

“While this case was not caused by the recent floodwaters, we do anticipate increased numbers of mosquitoes this season because of all the standing water that remains,” said THD Executive Director Dr. Bruce Dart in a news release. “West Nile virus was confirmed in mosquitoes in Tulsa County in early May, and we expect to encounter more positive trap locations throughout the county this season.

“Everyone can take steps to reduce standing water and protect themselves against mosquito bites to help prevent the spread of mosquito-borne illnesses like West Nile virus.”

West Nile virus spreads through infected mosquitoes biting humans after biting infected birds. Although 80% of infected individuals have no symptoms, anyone showing symptoms after having mosquito bites should immediately contact a health care provider.