First Human West Nile Virus Case Confirmed in Waterloo Region, Public Health Urges Vigilance

Waterloo Region Public Health has officially confirmed the year's inaugural human case of West Nile Virus (WNV), marking a crucial reminder for residents to elevate their vigilance against mosquito bites. This development underscores the ongoing presence of the virus in the environment and the importance of proactive measures to protect community health.

West Nile Virus is a mosquito-borne disease that can cause illness in humans.

While the majority of those infected with WNV will experience no symptoms or only mild, flu-like symptoms such as fever, headache, body aches, nausea, vomiting, or a rash, a small percentage can develop more severe conditions. These may include West Nile Encephalitis or Meningitis, characterized by high fever, severe headache, neck stiffness, stupor, disorientation, tremors, convulsions, muscle weakness, and, in rare cases, paralysis or death.

Individuals over 50 years of age and those with weakened immune systems are at a higher risk for developing serious complications.

The confirmation of this human case follows earlier reports of WNV-positive mosquito pools found within the region, indicating that the virus has been circulating.

Public Health emphasizes that prevention is the most effective defense against WNV. Residents are strongly advised to take a multi-pronged approach to minimize their exposure to mosquitoes.

Key prevention strategies include: using insect repellents containing DEET, Icaridin, or oil of lemon eucalyptus when outdoors; wearing light-coloured, long-sleeved shirts and long pants, especially during dawn and dusk when mosquitoes are most active; and ensuring window and door screens are in good repair to keep mosquitoes out of homes.

Eliminating standing water around properties is also critical, as mosquitoes lay their eggs in stagnant water. This means regularly emptying bird baths, cleaning eavestroughs, removing old tires, and ensuring swimming pools are properly maintained.

Waterloo Region Public Health continues to monitor WNV activity closely through its surveillance programs.

The public is encouraged to report any standing water concerns on public property to the region, assisting in the broader community-wide effort to control mosquito populations. Staying informed and practicing these simple preventative steps can significantly reduce the risk of WNV infection and help safeguard the health of everyone in our community.