Combining data from the University of Washington (UW) and Seattle Children’s Hospital (SCH) healthcare systems, this dashboard provides historical and real-time tracking of respiratory virus testing in the Seattle area.
Some important notes:
The SCH test results start from October 4, 2020. When the displayed data includes tests both from prior to October 4, 2020 and from SCH, a grey dashed line is displayed to denote the beginning of the SCH data.
The SCH data do not distinguish between rhinovirus and enterovirus. These tests are categorized as rhinovirus.
A single test for human coronavirus testing (not including SARS-CoV-2) at UW was replaced with four tests for the OC43, 229E, NL63, and HKU1 subtypes on October 4, 2021.
For the count numbers provided below, each “order” is one respiratory virus panel accession (at SCH) or battery (at UWMC). Clinically, each of these orders is often a panel that tests for multiple viruses at once.
For the plots, tests for separate parainfluenza or coronavirus (not including SARS-CoV-2) viruses are grouped into one test count and result (e.g. all 4 parainfluenza viruses are grouped into a single parainfluenza virus test). The test is considered positive if any virus in the group is positive. Virus-specific data for these viruses is displayed in the separate “Virus-Specific Data” tab.
Inconclusive test results are not considered positive tests.
Data last updated as of: 2024-09-21
5,766,040
315,641
244,197
1729
238
2
1489
Data below are aggregated by week for each virus. The specified date is the last day of the week that is being aggregated over. Data are updated once a week.
Data are aggregated over two weeks when filtering by age group to minimize the risk of potentially identifiable information and to provide sufficient data for more meaningful curves.
Once again, the grey dashed line at the beginning of October 2020 denotes when SCH data begins being included.
Age group data from both UW and SCH.
Tests by ordering location for all viruses. Note that all FHCC tests come from the outpatient FHCC clinics, not the inpatient unit at UWMC-Montlake.
Data are aggregated over two weeks to minimize potentially identifying information and provide sufficient data for each sub-group to have a meaningful curve.
The UW and SCH testing data differentiate between the different viruses for influenza, parainfluenza, and seasonal human coronaviruses (not SARS-CoV-2).
Since the SCH testing data only goes back to 10/4/2020, a grey line is displayed on 10/4/24 when SCH data is included to demarcate the introduction of the SCH data.
UW only began testing for the separate hCoV viruses on 10/4/2021. This is marked with a dashed blue line when both UW and SCH hCoV data are displayed.
Influenza A and influenza B count data by healthcare facility.
Influenza A subtype data was not consistently available for all influenza A tests, so is not specifically displayed.
Parainfluenza virus strain-specific data.
Note that not all parainfluenza virus tests from SCH included subtype information.
Our first metric of test utilization looks at the number of people being tested at UW and SCH.
We then look at the number of people with positive tests and how many of them had repeat positive results for the same virus within 2 weeks of a previous test. Overall, ~1% of people at UW and ~5% of people at SCH end up having a repeat positive test for the same virus within 2 weeks of an earlier positive.
Of note, we cannot currently determine if the same person was tested at UW and SCH, but expect this number to be low, especially for non-SARS-CoV-2 tests. The SCH data does not include SARS-CoV-2 tests tested at UW. Those tests are counted as “outside” tests in the SARS-CoV-2 UW data.
4,956,449
127,032
460,247
31,969
4,693
1,523
Test ordering practices by location type for UW and SCH. The UW data differentiates between “rapid” and “not rapid” testing. All the SCH tests have a quick turn around time (generally <2 hours) and are not split up into “rapid” or “not rapid” categories.
For the SCH data, the Emergency Department (ED) tests are considered “Inpatient.”