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Articles sur COVID-19

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People getting vaccinated may still have questions about COVID-19 vaccines, like why it takes two doses — and then two weeks — to take full effect. THE CANADIAN PRESS/Ryan Remiorz

I work at a COVID-19 vaccine clinic. Here’s what people ask me when they’re getting their shot — and what I tell them

A medical student answers questions he gets asked at a COVID-19 vaccine clinic: Efficacy versus real-world effectiveness, immune response and how the mRNA vaccines compare to vaccines already in wide use.
By better communicating how vaccines boost the immune system’s long term “memory”, manufacturers could address vaccine hesitancy. i_am_zews/Shutterstock

COVID-19 vaccines produce T-cell immunity that lasts and works against virus variants

Cell-mediated immunity is particularly effective at eradicating viruses, and more durable. This is important in the fight against COVID-19.
For children, the risks associated with school closures have surpassed the health risks associated with COVID-19. (Shutterstock)

COVID-19 back to school Q&A: Is it safe for unvaccinated children to go to school in person? Is the harm of school closures greater than the risk of the virus?

Amid uncertainties about what the pandemic will look like this fall, experts answer questions about risks of infection in unvaccinated children and the risks of missing in-person school.
Shutterstock

South African health experts have identified a new lineage of SARS-CoV-2: what’s known so far

We are being cautious about the implications for vaccine efficacy and transmissibility while we gather more data to understand this lineage.
Many U.S. states follow some form of “mature minor doctrine” allowing teens to make medical decisions without parental consent, including COVID-19 vaccination. Pete Bannan/MediaNews Group/Daily Times via Getty Images

Do US teens have the right to be vaccinated against their parents’ will? It depends on where they live

Some states have a legal framework allowing “mature minors” to make their own health care decisions – but they apply it in different ways, and some don’t have it at all.

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