Canada is poised to battle back more contagious coronavirus variants that threaten to jeopardize reopening plans across the country due to a huge uptick in vaccine supply, a willingness from Canadians to get the shots and some promising new vaccine research.
Canada is changing its guidelines on mixing and matching second doses of COVID-19 vaccines and will advise Canadians to combine either the AstraZeneca-Oxford, Pfizer-BioNTech or Moderna shots interchangeably in certain situations.
A German research team has put forward a potential solution to prevent the rare, serious blood clots caused by the AstraZeneca and Johnson & Johnson COVID-19 vaccines, but other scientists warn it's too early to draw conclusions about the mechanism behind the potentially deadly condition.