The finding led the National Advisory Committee on Immunization (NACI) to change the recommended time between doses of COVID-19 vaccines from three weeks to an unprecedented four months. announced it would be delaying second doses earlier this week. Why is Canada delaying second doses? 'Not based on evidence'The move has effectively doubled Canada's doses of COVID-19 vaccines overnight, but some scientists are critical of the move to experiment with delaying intervals. WATCH | The science behind delaying the 2nd dose of COVID-19 vaccines:The science behind delaying the 2nd dose of COVID-19 vaccines The National 2:04 Federal government scientists have put their support behind delayed second doses of COVID-19 vaccines — which several provinces were already doing — and ongoing research shows some of the benefits of the adapted strategy.

Source: CBC News March 06, 2021 09:02 UTC