Respiratory Virus Data

The respiratory virus data tool consists of surveillance dashboards and summary reports.

Respiratory virus data are updated weekly on Thursdays.

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Key trends

December 4, 2025

Respiratory virus activity in BC

Reporting period:  November 23-29, 2025 (Epi-week 48)​ - O​pen the weekly summary as a PDF

Current respiratory activity is measured in consideration of recent past respiratory seasons.​

Influenza and RSV activity are increasing; COVID-19 is decreasing.

Influenza

  • Influenza test positivity is increasing, notably among children. Wastewater viral loads remain low across the province​.

RSV 

  • RSV test positivity is increasing and is at low-moderate levels. Wastewater viral loads have shown recent signs of increase in a few sites but remain low overall.

COVID-19

  • SARS-CoV-2 test positivity continues to decrease and is at low levels. Wastewater viral loads are decreasing or remain stable at varying levels in most sites. Severe outcomes remain low.​

Health care visits

  • The proportions of emergency department and primary care visits for respiratory illness have increased over recent weeks, particularly among children. Trends remain comparable to the same period of the prior season.

National and international context

Influenza

  • In Canada, the influenza season started as of week 46 (week ending November 15, 2025). Influenza activity continued to increase across multiple indicators, with regions throughout the country reporting influenza activity.  
  • In the USA, seasonal influenza activity remains low but is increasing in children and young adults. 
  • In the European Union/European Economic Area (EU/EEA), influenza circulation is still at relatively low levels in most countries but detections are increasing rapidly. Circulation is highest in children aged 5-14 years.​

RSV

  • In Canada, indicators of RSV activity remain at interseasonal levels.
  • In the USA, RSV activity is increasing in the Southeastern and Southern areas of the country with emergency department visits increasing among children 0-4 years old.
  • In the EU/EEA, RSV circulation is low but increasing slowly, with children under five years predominantly affected.​

COVID-19

  • In Canada, indicators of COVID-19 activity were stable in the most recent reporting week.  
  • In the USA, COVID-19 activity is low. 
  • In the EU/EEA, SARS-CoV-2 continues to circulate widely but is decreasing in all age groups. ​
Find more epidemiological reports including past season reports

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Dashboards

The respiratory virus dashboards display data for circulating viruses including influenza, COVID-19, respiratory syncytial virus (RSV), enteroviruses/rhinoviruses, and others.
Reports

2025/26 Respiratory Epidemiological Summaries and Special Reports

​Respiratory virus activity summary

Past season: 2024/25 Epidemiological Summaries and Special Reports
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​Respiratory virus activity in BC: Weekly Summary

Past season: 2023/24 Epidemiological Summaries and Special Reports

​COVID-19 Situation Report

  • COVID-19 Situation Report Archive - This report is an archive of the data previously included in the COVID-19 Situation Report dashboard, from January 1, 2020, to August 31, 2024.

Respiratory Epidemiological Summaries

Respiratory season surveillance reports summarize key insights for circulating viruses including influenza, COVID-19, respiratory syncytial virus (RSV), enteroviruses/rhinoviruses (ERV), and others.​​

Special Reports

Historical reports
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  • ​​2022/23 Respiratory Season Surveillance Report
    • ​The respiratory season report summarizes key insights from 28 August 2022 through to 22 April 2023. Following two years of relatively low non-COVID-19 respiratory illness activity in 2020/21 and 2021/22, the 2022/23 season is characterized by the return to seasonal respiratory virus co-circulation patterns, albeit with some atypical features.
  • Archived B.C. COVID-1​9 Data​

Technical Documents & Resources

​About the Respiratory Diseases data platform

The Respiratory Diseases data platform combines surveillance for COVID-19, influenza and other respiratory pathogens in one platform to monitor trends throughout the respiratory season. The platform is made up of a series of interactive online data pages.

The last respiratory data update of the season was published on May 4, 2023. Updates on influenza and other respiratory pathogens will resume in the fall.

COVID-19 updates will continue monthly throughout the spring and summer.

Changes to COVID-19 data system: May 4, 2023

The British Columbia (BC) COVID-19 surveillance system was updated on May 4, 2023 to use infection episodes of COVID-19 to capture multiple COVID-19 infections in the same person. The update to the system will also capture all hospital and critical care admissions and deaths in a person with a positive lab test. This is a shift from using a system of using first positive lab result for surveillance.

For detailed information about the update to the surveillance system and impact of the changes, read the technical document: BC COVID-19 Surveillance System Update: Infection episode-based approach​

National data 

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