Nurse vaccinated for COVID-19 tests positive

Nurse vaccinated for COVID-19 tests positive-Milenio Stadium-Canada
Santosh Baral, a nurse working at a long-term care facility in Ottawa, says he’s tested positive for COVID-19 weeks after getting his second dose of the Pfizer-BioNTech vaccine. (Submitted by Santosh Baral)

An Ottawa nurse has tested positive for COVID-19 about two weeks after getting vaccinated, and experts say there are a number of possibilities why that might be.

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Santosh Baral said he was “speechless” when his results came back positive for COVID-19 last week after a routine test.

The positive test comes after receiving his second dose of the Pfizer-BioNTech vaccine on Jan. 8 and testing negative on Jan. 13.

There are positive cases at the long-term care home Baral works at, but he said to his knowledge, no other person who has received both doses of the vaccine has tested positive for COVID-19 since.

Baral said he feels fine, but is at home self-isolating until he is sure it is safe to return to work.

“I thank God I [don’t] have any symptoms so far, but who knows whatever is happening in my body. So definitely I have some anxiety,” Baral said.

Immunized could still carry and transmit COVID-19

Clinical immunologist and allergist Dr. Zainab Abdurrahman said there are a number of possibilities why Baral could have tested positive.

It takes up to a week to ten days after getting both vaccinations before becoming fully immune, so depending on the timing, she said a person could be exposed to the virus before the doses take full effect.

Abdurrahman added that while both the Pfizer-BioNTech and Moderna vaccines are 95 per cent effective, “there’s a small chance that you could still catch COVID-19 after you’re fully vaccinated.”

Covid-19 vaccine-Milenio Stadium-Canada
Health experts say even though vaccines have a 95 per cent chance of preventing you from getting COVID-19, it’s possible people can still carry and transmit the disease. (Grant Hindsley/AFP/Getty Images)

“Although with the studies, we did see those who did get it in that small percentage after being fully immune had very mild disease. So they didn’t have as much of the severe cases of COVID and this is not unlike any other vaccine,” Abdurrahman said.

What’s still unclear for researchers is whether the vaccine reduces the risk of carrying and transmitting COVID-19, Abdurrahman said.

Just because someone might be immune to the disease, it doesn’t mean they can’t carry or spread it, she said.

Vaccines not a replacement of other measures

Dr. Peter Jüni, scientific director of Ontario’s COVID-19 Science Advisory Table and professor of epidemiology at the University of Toronto, said without showing symptoms, it’s hard to determine if Baral does in fact have COVID-19 or is just carrying the disease.

But Jüni said immunized people testing positive “is nothing out of the ordinary,” as more people get vaccinated across the country.

“What makes it, of course, a bit more extraordinary is the situation we’re in right now with themutations from Brazil, South Africa and the U.K.,” Jüni said, which are being evaluated carefully by researchers.

He said that while the vaccines are both safe and effective, it’s important to continue to follow other health measures.

“Even if you’re vaccinated, you need to continue with physical distancing. You need to continue with wearing masks, especially because you want to protect others,” he said.


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