Q1. What is an adverse event?
An adverse event is any unwanted medical reaction following immunization.
The majority of adverse events are minor reactions – like soreness at the injection site, or a slight fever – but sometimes, more serious events are reported. Serious adverse events are reactions that cause life-threatening illness, hospitalization, disability or death, like a severe allergic reaction, paralysis, or a seizure. These events are carefully investigated to determine if they are related to the vaccine directly, or if they were caused by an underlying health condition or some other reason.
Q1. Serious adverse events following immunization are rare. In any immunization campaign, from regular childhood vaccines to seasonal flu shots, the average reported rate of serious adverse events is about one case for every 100,000 doses distributed.
Careful monitoring and prompt reporting of any adverse event after immunization are an essential part of the Government of Canada's commitment to providing a safe and effective vaccine. Reporting an adverse event does not mean that the vaccine caused harm. Careful investigation is needed to determine if the events are linked or if they are coincidental.
If there is ever an indication that a vaccine, or a specific batch or lot of vaccine, is harmful to the general population, the Government of Canada has systems in place to quickly and effectively stop or alter immunization programs."
To the above information the Government of Canada should perhaps say that it does not consider evidence of autistic regression after vaccination to constitute adverse events, no matter how many times such non-adverse events are reported by parents. As to the assurance that the Government of Canada will act quickly in the event of an "indication that a vaccine is harmful to the general population" I don't expect to see any time soon publication of the Government of Canada's efforts to follow up on reports of autism disorder onset in children after vaccination. It would be helpful if the Canadian government actually did conduct a careful investigation to see if autism disorders are "are related to the vaccine directly, or if they were caused by an underlying health condition or some other reason."