West nile virus test ontario

Therefore, the presence of IgG antibodies alone is only evidence of previous infection and clinically compatible cases with the presence of IgG, but not IgM, should be evaluated for other etiologic agents. Plaque-reduction neutralization tests PRNTs performed in reference laboratories, including some state public health laboratories and CDC, can help determine the specific infecting flavivirus.

PRNTs can also confirm acute infection by demonstrating a fourfold or greater change in WNV-specific neutralizing antibody titer between acute- and convalescent-phase serum samples collected 2 to 3 weeks apart.

Viral cultures and tests to detect viral RNA e. However, the likelihood of detecting a WNV infection through molecular testing is fairly low. Negative results of these tests do not rule out WNV infection. Reporting Results are reported to the ordering physician or health care provider as indicated on the requisition. Test Methods. Data and Analysis. Interactive Report West Nile Virus Surveillance Weekly analyzed provincial mosquito, human and weather data with interactive graphs.

Updated 31 May Share to. Copy link URL:. Blog Contact Careers Media. MyPHO Register for MyPHO to save commonly accessed resources, select areas of interest to help us recommend content most relevant to you, access online learning, and subscribe to our mailings.

Register Now. You have successfully created a MyPHO account! Event PHO Rounds: Novel Disease Surveillance Tools for the Next Pandemic This seminar will introduce the concept of informal disease event monitoring systems and how this type of data can and has been used to explore communicable disease epidemiological trends among forcibly displaced persons worldwide. Updated 21 Feb Share to. Copy link URL:. Blog Contact Careers Media. MyPHO Register for MyPHO to save commonly accessed resources, select areas of interest to help us recommend content most relevant to you, access online learning, and subscribe to our mailings.

While most people will not become sick if they get bitten by an infected mosquito, health officials say the West Nile virus can cause severe illness in some people. Symptoms of the virus include fever, muscle weakness, neck stiffness, confusion, severe headache and sudden light sensitivity. In rare cases, the health unit says the virus may cause serious neurological illness and that those experiencing symptoms should seek medical advice. To protect oneself from mosquitoes, health officials say people should use an approved mosquito repellent, wear light-coloured clothing and cover up when mosquitoes are present, try to stay indoors when mosquitoes are most active and remove standing water around homes or cottages.

World Canada Local. Mosquitoes test positive for West Nile virus in Alliston, Ont. Full Menu Search Menu.