NOTE This article is 6 months old – and still very relevant in light of our current lockdown rules* *
*Physical distancing, mask-wearing could be in place for 2-3 years even with vaccine, Tam warns*
COVID-19 vaccine won’t be a ‘silver bullet,’ chief public health officer says
Ryan Patrick Jones <www.cbc.ca/news/canada/ottawa/author/ryan-patrick-jones-1.4775725>·CBC News·Posted: Aug 04, 2020

Canadians shouldn’t expect a COVID-19 vaccine to be a “silver bullet” that will bring a swift end to the coronavirus pandemic and a return to normal, according to the country’s chief public health officer.
Dr. Theresa Tam used her briefing on Tuesday in Ottawa to temper expectations about the speed and effectiveness of a vaccine. She reiterated the importance of physical distancing, proper hand hygiene and mask-wearing, and attempted to dispel any notion that a vaccine will make life go back to the way it was in a couple of months.
“We can’t at this stage just put all of our focus [on a vaccine] in the hopes that this is the silver bullet solution,” said Tam.
“We’re going to have to manage this pandemic certainly over the next year, but certainly [we are] planning for the longer term of the next two to three years during which the vaccine may play a role but we don’t know yet.”
Tam said it’s unclear at this stage how effective a vaccine will be. She said key questions remain about the degree and duration of immunity a vaccine will provide, the dosage that will be needed and whether it will prevent people from getting infected altogether or simply prevent severe illness requiring hospitalization.
More than 150 under development
There aremore than 166 vaccines <newsinteractives.cbc.ca/coronavirusvaccinetracker/>at various stages ofpreclinical and clinical (human) testing <www.cbc.ca/news/health/vaccine-clinical-trials-1.5580436> across the globe right now, the World Health Organization says.U.S. <www.cbc.ca/news/world/us-azar-vaccine-global-supply-1.5571264>andEuropean <www.cbc.ca/news/world/coronavirus-vaccine-1.5569165>experts say under an optimistic scenario, the first of those vaccines could complete testing and get approval for distribution next year.
Tam warned that even once a vaccine is tested and deemed to be both safe and effective, there will be challenges with distributing it widely to those who need it.