Covid-19 vaccine: what you need to know about its very likely side effects

While the coronavirus epidemic is hitting almost the entire globe, laboratories and researchers around the world have been busy and scrambling for months to find a vaccine against Covid-19. Several clinical trials are currently underway around the world. For now, no vaccine has finished its development. However, the idea of ​​a vaccine is far from unanimous in France. And for good reason, a quarter of French people would not intend to be vaccinated, according to a study published in the journal Lancet Infectious Diseases.

“Although the use of a vaccine is now subject to uncertainties and scientific unknowns (efficacy, medium or long-term availability, type of vaccine, etc.), it is now crucial to develop a vaccine strategy national, so that this tool can be effectively integrated into the more global strategy to fight the Covid-19 epidemic as soon as it becomes available “, indicates the Scientific Council in its opinion published on July 9th. The researchers say the vaccine against the virus is subject to uncertainties that may fuel doubts about “possible side effects with certain audiences”.

The likely side effects of the Covid-19 vaccine

According to the vaccination info-services site, it is possible that a redness, pain or slight swelling appears where the vaccine was injected, a few hours after a vaccination. The vaccinated patient may also have a fever, headache or body aches. These reactions are frequent and harmless. They do not last more than two days after vaccination.

So, like any vaccine, the one against Covid-19 can also cause side effects. “I think one of the things we’re going to have to realize is that all of these vaccines are going to be reactogenic … They’ll all be associated with reactions.”, told the scientific journal Stat, Kathryn Edwards, Director of the Vanderbilt Vaccine Research Program in Nashville, Tennessee, USA. Scientists therefore believe that it is logical to prepare the population now for the possibility that the Covid-19 vaccines are reactogenic.

The British health system National Health Service (NHS) published on July 21 the results of a clinical trial of a vaccine. “None of the participants experienced serious side effects from the vaccine. However, more than half reported fatigue, headache, chills or pain at the injection site. These symptoms were more frequent after the second vaccination and in those who received the highest dose of the vaccine “.

In its opinion, the Scientific Council stresses that a vaccination campaign against Covid-19 could thus come up against the reluctance of some French people, as some surveys suggest. “Communication is a condition for the success of a vaccination campaign. It must be transparent about the procedures that have allowed the acceleration of the marketing without appearing to have been carried out to the detriment of safety”.

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