It’s ‘high time’ that authorities revise definition of ‘fully vaccinated’: experts – CTV
June 6, 2022
As more evidence emerges on the efficacy of third doses of the COVID-19 vaccine, experts say it’s high time public health authorities revise the definition of “fully vaccinated” to include a booster dose.
While most SARS-CoV-2 vaccines available in Canada were initially developed and tested to include two doses – with the exception of the Johnson & Johnson vaccine – a primary course should instead consist of three doses, said Colin Furness, an expert in infectious disease epidemiology from the University of Toronto.
“Someone who’s only had two shots will say, ‘I’m fully vaccinated,’ and that’s what the authorities are saying, [but] the authorities have got it wrong,” Furness told CTVNews.ca in a telephone interview on June 1. “When we look at the diminishment of immunity after the second dose, really, this is a three-dose vaccine.”
