Canadian health officials have issued public advice that those taking mRNA Covid-19 drugs should be warned of the “very rare risk” of heart inflammation caused by gunshot wounds.
The counseling effectively affects two mRNA drugs – those released by Pfizer-BioNtech and Moderna – approved for use in emergencies in Canada.
The National Vaccination Council (NACI) recommended on Friday that the “informed consent” of those receiving mRNA treatment should “include a discussion on the unusual risk” of these two conditions – myocarditis or pericarditis – following immunization.
It said that as a precautionary measure, those who experience these two side effects after receiving the first dose should “wait for the second dose until further details”.
NACI continues to strongly recommend that mRNA drugs be given to those who are eligible to receive it.
“We have been monitoring the changing incidence of rare cases of myocarditis or pericarditis following mRNA vaccination in adolescents. NACI is encouraged to see that clinical submissions appear mild, and are resolved promptly. The benefits of the Covid-19 vaccine continue to outweigh the risks for all, including youth, ”said NACI chief executive Shelley Deeks.
Her comments were echoed by Canadian public health officer Theresa Tam, who said, “There have been a small number of cases of myocarditis and pericarditis reported in Canada after vaccination. Evidence is emerging, and a Canadian and international study on the link between myocarditis or pericarditis and mRNA vaccines is ongoing. I want to inform Canadians that the benefits of mRNA Covid-19 vaccine continue to outweigh their risks. ”
According to data available from Health Canada as of June 18, there were 65 cases of myocarditis or pericarditis found in the country. Of these, 50 occurred after Pfizer-BioNtech jabs, 10 followed Moderna and five followed Covishield, India’s Oxford-AstraZeneca vaccine.