British Columbia (BC) Influenza Surveillance Bulletin

British Columbia (BC) Influenza Surveillance Bulletin

Influenza Season 2019-20, Number 10, Week 14 March 29 to April 4, 2020

Table of Contents:

British Columbia:

Sentinel Physicians Children's Hospital ER Medical Services Plan Laboratory Surveillance ILI Outbreaks

Page 2 Page 3 Page 3 Page 5 Page 9

Emerging Respiratory Viruses:

2019 Novel Coronavirus, "COVID-19"

Page 10

Canada:

FluWatch Activity levels NML Strain Characterization NML Antiviral Resistance AMMI Anti-Viral Drugs Guideline

Page 11 Page 11 Page 11 Page 11

International:

USA (CDC) WHO

Page 12 Page 12

Influenza Vaccine Components (WHO Recommendations)

2019-20 Northern Hemisphere 2020-21 Northern Hemisphere

Page 13 Page 13

Additional Information:

Explanatory note List of Acronyms Web Sites Outbreak Report Form

Page 14 Page 14 Page 14 Page 15

Laboratory and clinical indicators of influenza illness have plummeted in British Columbia

In week 14, laboratory and clinical indicators of influenza-like illness in BC have decreased substantially. Most clinical indicators are close to historic averages for this time of the year. Changes in health-care seeking behaviours and diagnostic testing practices during the COVID-19 pandemic should be taken into account in interpreting these indicators.

Previously elevated clinical indicators such as the BC Children's Hospital Emergency Room, MSP claims, and sentinel practitioner reports of ILI have steadily decreased. Of note, social distancing measures and switch to offsite telehealth approaches may be influencing these health care indicators.

Both the absolute number of detections and the proportion of respiratory specimens testing positive for influenza virus have decreased. In week 14, ................
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