Covid Immunity

• Got COVID? Here’s how long immunity might last as new variants emerge

  Infection-acquired immunity from catching COVID-19 can act as a protective layer for a period of time, but it wanes and is not guaranteed, experts warn.

  Canada

  Oct 11, 2022
  
• Think you’re immune to COVID-19 after getting sick? Maybe not, new research shows

  At least 40 per cent of Canadians have been infected with the Omicron variant of COVID-19, but new data shows not everyone who gets sick will develop immunity.

  Health

  Jul 6, 2022
  
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• Canadians urged to get COVID-19 booster shots ahead of potential fall wave

  Federal health officials are urging Canadians to get booster doses of the COVID-19 vaccine in advance of a possible resurgence of the virus in the fall.

  Health

  Jun 30, 2022
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• Nearly one-third of the Canadian population has had COVID-19, antibody data shows

  Analysis of blood samples shows that the highly contagious Omicron variant of COVID-19 has doubled the natural infection rate across Canada.

  Health

  Apr 26, 2022
• COVID-19 free: How have so many people escaped the virus? Here’s what we know

  In Canada, nearly 3.5 million COVID-19 cases have been reported, which is nine per cent of the total population -- but what about the rest?

  Health

  Apr 2, 2022
• Omicron and vaccines: Experts break down the science behind COVID-19 jabs

  Experts say a third COVID-19 dose is needed to increase the level of antibodies following their decline. However, it's not clear how long an mRNA booster dose remains effective.

  Health

  Jan 14, 2022
• Thousands of Canadians have recovered from COVID-19. Do they need the vaccine?

  Rare as reinfection may be, it proves that coronavirus reinfection is possible, experts say.

  Health

  Dec 17, 2020
• Two people in Europe reinfected with coronavirus months after 1st illness

  The development has fueled fears about the effectiveness of potential vaccines against the virus.

  Health

  Aug 25, 2020
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• 1st coronavirus reinfection case reported by researchers in Hong Kong

  The findings indicate the disease may continue to spread amongst the global population despite herd immunity, the researchers suggest.

  World

  Aug 24, 2020