5 things you don't know about COVID-19

Know the transmission of the virus by air.

Health news flash:

stérilisation uvc covid
  1. The Sras-Cov-2 virus is an organic element whose average size is 100nm, i.e. 0.1 micron (between 0.06 and 0.14 microns)


  2. According to Antoine Flahault , director of the Institute of Global Health at the University of Geneva, “at least 70% of contamination is caused by aerosols” .


  3. Intensive hand washing only reduces the risk of transmission among respiratory viruses by 15% . (Source: Institute of Global Health of the University of Geneva)


  4. The three criteria for transmission of COVID-19 according to the WHO:
  • Crowded spaces;
  • Close contact, for example when people are talking while standing very close to each other;
  • Confined and enclosed spaces, poorly ventilated.

  1. According to the INRS, care (or surgical) masks do not protect against the inhalation of very small particles suspended in the air.