Respiratory Syncytial Virus Percent Positivity in Ottawa

<p style='background-color:rgb(255, 255, 255); border:0px solid currentcolor; box-sizing:border-box; color:rgb(74, 74, 74); font-family:&quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; margin:0px 0px 1.5rem; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;'><strong>Date created:</strong> September 2025<br /><strong>Update frequency:</strong> Weekly&nbsp;<br /><strong>Points of consideration for interpretation of the data:</strong></p><ul><li>Lab testing for RSV is only available to hospitalized patients and, from Nov. 14th 2022 onwards, symptomatic individuals in healthcare institutions.&nbsp;&nbsp;</li><li>Prior to the 14th of Nov. 2022, lab testing for RSV was only available to hospitalized patients and up to four patients per respiratory infection outbreak in healthcare institutions.&nbsp;</li><li>Not all labs report to OLIS and only patients with health card numbers are included in the OLIS dataset.&nbsp;</li><li>Results for patients who placed an OLIS consent block (~50 records province-wide) are excluded.</li><li>City assignment in OLIS is based on the patient's health card address. Patients living in long-term care homes may not have the correct address associated with their health cards; therefore, not all tests in long-term care homes may be captured.<br />&nbsp;</li></ul><p style='background-color:rgb(255, 255, 255); border:0px solid currentcolor; box-sizing:border-box; color:rgb(74, 74, 74); font-family:&quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; margin:0px 0px 1.5rem; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;'><strong>Data fields:</strong></p><ul><li>Epidemiological Week – epidemiological week number (i.e. epi week)</li><li>Start of Week – date of the first day of a week, starting on Sundays</li><li>Total Tests for Ottawa Residents– total weekly number of respiratory specimens from Ottawa residents tested for RSV</li><li>RSV Percent Positivity in Ottawa – weekly RSV percent positivity among viral respiratory specimens taken from Ottawa residents (reporting week)</li><li>Historical Average of RSV Percent Positivity in Ottawa –weekly average influenza percent positivity in Ottawa during the previous two years</li><li>Order of Weeks in Respiratory Surveillance Season – order of epidemiological weeks based on the corresponding calendar date<br />&nbsp;</li></ul><p style='background-color:rgb(255, 255, 255); border:0px solid currentcolor; box-sizing:border-box; color:rgb(74, 74, 74); font-family:&quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; margin:0px 0px 1.5rem; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;'><strong>Author: </strong>OPH Epidemiology Team<br /><strong>Author email:</strong> <a style='border:0px solid currentcolor; box-sizing:border-box; color:rgb(0, 97, 155); font-family:inherit; line-height:1.5; text-decoration:none;' href='mailto:[e-mail]' rel='nofollow ugc'>[e-mail]</a><br /><strong>Maintainer Organization:</strong> Epidemiology &amp; Evidence, Ottawa Public Health</p>