Some Canadians contracted COVID-19 after first vaccine dose: PHAC

TORONTO – The Public Health Agency of Canada (PHAC) says that out of more than 13 million people receiving the first dose of the vaccine, there are 6,789 confirmed COVID-19 cases who have been vaccinated.

In a statement emailed to, PHAC stated that 4,515 of these cases were reported as less than 14 days after being vaccinated and 2,274 cases less than 14 days after receiving the first dose.

In reported cases, PHAC stated that a relatively small number are the result of severe COVID-19 or death.

The agency said on Monday, “As of 26 April, out of 2,274 cases whose outcome information was available, 203 COVID-19 cases were hospitalized, and 53 cases died due to COVID-19. “

According to data tracked by, more than 13 million Canadians have received their first dose of the COVID-19 vaccine as of Tuesday morning.

Experts say getting sick after being vaccinated is rare, but note that infection is still possible.

Infectious Disease Specialist Dr. Abdu Sharqi previously told that “immunization requires time to establish after vaccination.” He said why Canadians are being urged to follow public health measures, including physical disturbances, frequent hand washing and wearing face masks.

“Shakivi said,” Immediately after vaccination is most susceptible to short-term periods … to infections due to incomplete immunity. “He said that the time to establish immunity after each dose is two to 12 weeks, depending on the vaccine and the health status of the person receiving the vaccine.

Despite the possibility of infection after vaccination, Sharkawy said this does not mean that vaccines are ineffective or that people should not get vaccinated.

“Vaccines protect and do very well in most cases, but it takes time for our immune system to respond adequately. We must take care of this before we are presumed to be ineffective with the vaccine,” he said.

While the vaccines are not 100 percent effective, infectious disease specialist Drs. Isaac Bogoch First told CTV News Toronto PHAC’s data highlights the benefits of receiving the first dose in the arms of Canadians as soon as possible.

Bogoche stated that this shows that a single dose provides some layer of protection against COVID-19.

“You can’t have the same degree of protection compared to having two doses of a vaccine. Having said that, it’s still very important protection, and based on the data you’ve read, you can follow a single dose from anywhere. Are safe from hospitalization. Bogoch said, “about 60 to 80 percent.”

Even if someone had become ill after receiving the first dose of the COVID-19 vaccine, Drs. Zen Chagla, an infectious disease specialist with McMaster University in Hamilton, Ontario, says the patient will get better if they are not found. Dosage.

Chagla said in an interview with CTV, “Spontaneously, people who are in the hospital after their first dose – where it gets kicked – are much less ill than they are. They are the kind of people you expect to be bad.” ” News Toronto.

While infection after the first dose is a rare possibility, experts say there is also a chance that some Canadians may become infected with COVID-19 after being fully vaccinated.

Virologist Jason Kindrachuk of the University of Manitoba told in March that these so-called breakthrough infections are expected because not everyone will have an immune response to the vaccines.

“When we see people who are vaccinated, there’s going to be this detachment of people who don’t mount a strong enough response to fully protect against infected and developing disease,” Kinderchuk said .

However, Kindrachuk stated that these infections are generally not a cause for concern.

“Those cases are not always exceptions and not ideal, and we have to keep our minds on how many infections we have seen and in this case, how many vaccinations are being administered,” he said.

Kindrachuk said that the chance of a successful infection after vaccination of the overpopulation would decrease.

He clarified that if a greater number of Canadians are vaccinated against COVID-19, a single transmission infection is unlikely to lead to a larger transmission chain or re-communication of the virus as communities have already established “That buffer of people: really protect.”

“The more people get vaccinated, the closer they are [breakthrough infections]Kinnearchuk said that there is less chance that the virus will start moving through that community and make people sick.

With files from CTV News Toronto


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