June 24, 2021

Covid-19 vaccine: a hope, but still many questions


GREAT DECRYPTION – Side effects, production, storage at – 70 ° C … The very promising results presented by Pfizer give rise to many questions about the deployment of this vaccine.

Pfizer has pledged to produce 1.3 billion doses of its vaccine, including 50 million by the end of the year.
Pfizer has pledged to produce 1.3 billion doses of its vaccine, including 50 million by the end of the year. DADO RUVIC / REUTERS

Hope raised on Monday by the announcement of a first vaccine “90% effective” is all the more immense as the epidemic resumption is brutal in the northern hemisphere. But the good results presented by Pfizer and BioNTech in a way raise more questions than they provide certainty …

The technology itself, similar to that developed by Moderna Therapeutics, is quite innovative. It consists of injecting small strands of genetic code encapsulated in a tiny protective envelope. This messenger RNA (the equivalent of DNA but with only one strand) will serve as a “recipe” to allow cells to produce very specific proteins. In this case, it is the spicules of the coronavirus, these mushroom-shaped proteins that bristle its surface. “Biologically, it is almost more natural than a conventional vaccine because part of the work is entrusted to the human body”, underlines the Pr Jean-Louis Koeck, microbiologist, founder of

This article is for subscribers only. You have 93% left to discover.

Subscribe: 1 € the first month

Can be canceled at any time

.

Leave a Reply

Your email address will not be published. Required fields are marked *