British Columbia medical experts look into AstraZeneca vaccine after province records second case of blood clots – fr

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British Columbia medical experts look into AstraZeneca vaccine after province records second case of blood clots – fr


VANCOUVER – British Columbia medical experts reassure the public that the AstraZeneca COVID-19 vaccine is still safe after the province recorded its second case of shooting-related blood clots.

Provincial health worker Dr Bonnie Henry revealed on Thursday the case was a man in his 40s, adding he was “in stable condition and receiving treatment in Fraser Health Region.”

The man was revealed to be Langley’s father, Shaun Mulldoon. In a public Facebook post, Mulldoon said doctors found a “massive blood clot” 17 days after receiving the AstraZeneca vaccine.

“I ended up having emergency surgery to remove over 6 feet of my small intestine,” Mulldoon’s post read.

A friend of Mulldoon told CTV News Vancouver his family were not ready to speak to the media.

CTV News spoke to medical experts in British Columbia about the AstraZeneca vaccine and the rare disease now associated with it.

What is VITT?

The condition is called vaccine-induced thrombotic thrombocytopenia (VITT). Vancouver family doctor Dr. Anna Wolak told CTV News in an interview that it causes blood clots “wherever there are blood vessels, so basically all over your body.”

“When we look for head-to-toe signs, we look at things like headaches, signs of a stroke, paralysis, blindness… chest pain, shortness of breath,” Wolak said. “There may be blood clots in the intestines, so if you have severe abdominal pain… We are also examining your limbs.”

Wolak adds that there are tests to see if a patient has developed VITT, and treatment is available through medication at a hospital.

How rare is this?

The provincial health worker previously said that VITT occurs in about 1 in 100,000 doses. Dr Brian Conway, medical director of the Vancouver Infectious Disease Center, says the risk is “a little higher than we thought. initially”.

“When it was first reported it was around one in a million,” Conway said, adding that he now thought it was “probably closer to one in 55,000”.

He said a patient’s chances of developing VITT decrease with the second dose.

“If you did well with the first stroke, the risk of a blood clot or any serious side effect with a second stroke is extremely low, one in a million or even less,” Dr. Conway said.

This week, the province announced that it will only use AstraZeneca for second doses in the future.

Is AstraZeneca safe?

Dr Ismael Samudio is an immunologist from Vancouver and founder of Immunity Diagnostics Inc.

When asked if he thought the vaccine was safe, he replied, “Absolutely, in fact, quite transparently, I signed up at five different pharmacies to try and get vaccinated on AstraZeneca.”

“The vaccine is old fashioned technology,” Samudio explained. “You take a virus and make it look like SARS-VOC 2. So when it comes in, your immune system sees it’s a virus. And this is what the immune system knows very well, viruses and pathogens. “

The AstraZeneca and Johnson & Johnson vaccines use this method. They are known as viral vector vaccines, while Moderna and Pfizer-BioNTech vaccines use a new technology known as messenger RNA.

What to do if you have received AstraZeneca?

The BC Center for Disease Control recommends monitoring for symptoms between four and 28 days after receiving the AstraZeneca vaccine. If symptoms appear, call 811 or see a doctor immediately.

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