2nd mpox vaccine dose still needed by Canadians at risk: public health
CBC
Public health agencies are encouraging people who received a first dose of mpox vaccine over the last two years to make sure they get a second dose.
Many people at risk for mpox exposure got vaccinated in Canada beginning in spring 2022, when a global outbreak of the virus was declared, Canada's chief public health officer said in a recent interview with The Canadian Press.
But a lot of them never got a second dose, which is recommended at least 28 days after the first shot.
"Please get that second dose in order to have the strongest immunity," said Dr. Theresa Tam.
The number of mpox cases dropped in 2023 but appear to be on the rise again in parts of Canada. As of Aug. 24, there have been 166 confirmed cases in Ontario this year, compared to only 33 cases last year, according to data posted online by Public Health Ontario.
Only 36 per cent of people who got one dose of the mpox vaccine, Imvamune, in Ontario got a second dose, the agency said.
The majority of the province's cases — 83 per cent — have been in Toronto this year, it said.
"Toronto Public Health (TPH) continues to provide access to mpox vaccination through TPH clinics and community health partner clinics," Dr. Rita Shahin, associate medical officer of health for the city of Toronto, said in an emailed statement.
"Eligible residents are encouraged to start or complete the two-dose vaccination series for the best protection," Shahin said.
People eligible for vaccination include men who have sex with men and have more than one partner; men who have sex with men who have gone to venues for sexual contact; people who work in those venues; and sex workers, regardless of gender.
So far, Canada has only seen one type of mpox, known as clade II, which is spread primarily through close contact, including sexual contact.
WATCH | Delay in mpox vaccine arrival in Africa explained:
People can also get the virus when handling personal items used by an infected person, including towels, clothing and bedding, or when sharing utensils, toothbrushes, razors, needles or sex toys, according to the Public Health Agency of Canada website.
Montreal, which had many cases in 2022, doesn't appear to be seeing the same rise as Toronto. Nine mpox cases have been confirmed so far in 2024, according to an emailed statement from the city's public health authority.
This story is part of CBC Health's Second Opinion, a weekly analysis of health and medical science news emailed to subscribers on Saturday mornings. If you haven't subscribed yet, you can do that by clicking here.
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