Covid-19 : viral infection less frequent at high altitude, why ?

An article published in Frontiers in Physiology tends to show that populations living above 2500 meters are less prone to Covid-19. Adaptation to oxygen deprivation would reduce SARS-CoV-2 infection through a complex mechanism involving the renin-angiotensin system that Jean-Marc Sabatier has often described here.



Vaccines : immediate and long-term dangers of the 3rd dose

Two scientists, Dr. Jean-Marc Sabatier and Prof. Jacques Fantini*, explain why the third vaccine dose can have serious long-term side effects due to the “ADE” phenomenon (Antibody-dependent enhancement: facilitation of infection by antibodies). The benefit/risk ratio would be unfavorable. Explanations

Many encouraging leads are emerging to combat the coronavirus, but they have yet to pass clinical trials.(Shutterstock)

Memento Covid-19 : A quick review before the start of the school year

Since the discovery of SARS-CoV-2 in China on January 9, 2020, we have been inundated with more or less verified information on the pandemic. It is useful to take stock of the scientific knowledge on the subject, with Jean-Marc Sabatier*.

coronavirus structure (

Schematic structure of the SARS-CoV-2 coronavirus (

Covid-19: the dangers of the third dose of the vaccine!

The current composition of vaccines uses so-called “facilitating” antibodies that promote infection by the SARS-CoV-2 virus that causes Covid-19 disease. Explanations with Dr. Jean-Marc Sabatier, Research Director at CNRS and PhD in Cell Biology and Microbiology, affiliated with the Institute of NeuroPhysiopathology (INP), at the University of Aix-Marseille.