Immunity against Omicron from breakthrough infection could be a matter of timing
Laboratory studies hint that a longer interval between vaccination and infection is better than a shorter one. Saima May Sidik …
Archives de Tag: Vaccines
How bad is Omicron? What scientists know so far
COVID researchers are working at breakneck speed to learn about the variant’s transmissibility, severity and ability to evade vaccines. Ewen …
COVID super-immunity: one of the pandemic’s great puzzles
People who have previously recovered from COVID-19 have a stronger immune response after being vaccinated than those who have never …
COVID vaccine immunity is waning — how much does that matter?
As debates about booster shots heat up, what’s known about the duration of vaccine-based immunity is still evolving. Elie Dolgin …
Mounting evidence suggests Sputnik COVID vaccine is safe and effective
Russia’s vaccine is in use in nearly 70 nations, but its adoption has been slowed by controversies and questions over …
As summit ends, G-7 urged to deliver on vaccines, climate
By JILL LAWLESS, SYLVIA HUI and DANICA KIRKA FALMOUTH, England (AP) — The Group of Seven leaders aim to end …
Why is it so hard to investigate the rare side effects of COVID vaccines?
For the vast majority of people, COVID-19 vaccines are safe and effective. But further research is needed to understand the …
Scores of coronavirus vaccines are in competition — how will scientists choose the best?
Developers and funders are laying the groundwork for efficacy trials, but only a handful of vaccines are likely to make …
Groupe Gaulliste Sceaux 