Covid-19: immune memory could last more than eight months

The more time passes, the more perspective we have on the natural immunity developed by ex-Covid-19 patients. In November, we could say that antibodies against … Read more

Pfizer vaccine: have 3000 people experienced adverse effects in the United States?

Question asked by Victor on 12/27/2020 Hello, For several days now, worry about the messenger RNA vaccine against Pfizer-BioNTech’s Covid-19, the only one to be … Read more

Covid-19: what do we know about virus mutations in South Africa?

While the virus is constantly mutating (over 12,000 mutations have been identified over the past year), a variant of concern has been reported by the … Read more