West Nile Virus Confirmed Across Multiple US, Canadian Regions

West Nile Virus (WNV) has been detected in multiple U.S. states and regions, sparking public health advisories and mosquito control efforts. In Tennessee, North Knoxville has confirmed WNV presence amid the highest number of cases nationally, prompting scheduled mosquito spraying and CDC-recommended preventive measures such as using insect repellent and avoiding outdoor activities during peak mosquito hours. Similarly, Mercer County, Pennsylvania, has reported multiple positive mosquito samples, though no human cases have been identified yet, with officials urging residents to eliminate standing water and protect themselves from bites. Massachusetts has elevated the WNV risk level from low to moderate in Seekonk and nearby areas after mosquito samples tested positive, advising residents to take standard precautions. In Canada, the Simcoe Muskoka District Health Unit confirmed WNV activity in mosquitoes and birds, warning residents to minimize exposure and report dead birds to health authorities. Across all affected areas, public health officials emphasize early symptom recognition and prompt medical consultation to reduce severe health outcomes associated with the virus.