As confinement continues and healthcare workers around the world struggle to heal affected patients, the scientific community is mobilizing to understand the crazy spread of Covid-19. Even though research is progressing, many questions remain unanswered, notably on the modes of transmission of the virus. Doubts which push certain nations to take radical measures. In the USA, Donald trump said health officials now advise covering their faces when they leave their homes. The doctor Anthony Fauci, director of the National Institute of Infectious Diseases and adviser to the President on the epidemic, said on Fox News than "the virus can actually be spread when people are just talking, rather than just sneezing or coughing".
The virus could be spread through the air that people breathe out
According to the first results of preliminary scientific studies collected by the American Academies of Sciences, transmission of the virus could take place through the air exhaled by people. So far studies have claimed that it is only done by droplets sprayed during a sneeze directly on the face of other people or on surfaces (where it has been shown that the virus can survive for hours or even days). University of Nebraska researchers find portions of the Covid-19 (RNA) genetic code in the air of rooms where contaminated people were isolated.
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