Quebec is accelerating its vaccination rollout by inoculating as many people as possible instead of holding back doses to be given later as booster shots.
“All the vaccines that we have received and that we will receive in Quebec over the next few weeks will be used to immunize as many priority groups as possible,” the Health Department said in a statement Thursday.
Vaccine-maker Pfizer had requested the province reserve half the doses as booster shots for those already vaccinated. That strategy had been criticized by health experts who said the province’s vaccine rollout was taking too long.
Quebec has so far received 87,000 doses of vaccine — 55,000 doses from Pfizer-BioNTech and 32,500 from Moderna — and has administered 29,250 injections. Both vaccines require two doses: Pfizer recommends a second dose after 21 days while Moderna says its second dose should come 28 days after the first injection.
Dr. Gaston De Serres, chief physician of the scientific immunization group at Quebec’s national public health institute, said Thursday the first dose provides the majority of the protection against the virus. The second, he added, serves mostly to prolong that protection.
Meanwhile in Quebec City, almost 100 people at a long-term care home — both residents and staff — have tested positive for COVID-19 after they were vaccinated against the virus, according to the regional health authority. The Saint-Antoine long-term care home was the site of the first COVID-19 vaccination in Canada on Dec. 14.
De Serres said the outbreak at that facility had been detected several days before vaccinations began. He said it takes time for the body to build immunity following a COVID-19 vaccine.
“It’s not really a surprise to see these cases occurring,” De Serres said in an interview. “In general, with vaccines, we anticipate that protection should be present starting two weeks after the vaccine has been injected, not necessarily the day the vaccine has been injected.”
He said he doesn’t expect any more cases among people who received the vaccine on Dec. 14 and 15. The Health Department said there were 64 active cases of COVID-19 among residents at Saint-Antoine on Wednesday, the most recent date for which data is available.