WHO issued new guidelines on transmission of coronavirus
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The World Health Organization (WHO) on 9 July issued new guidelines on the transmission of the novel coronavirus acknowledging some reports of airborne spread of the SARS-CoV-2 virus that causes COVID-19.

Key points of the brief:

• Transmission of SARS-CoV-2 occurs through direct, indirect, or close contact with infected people through infected secretions (saliva, respiratory secretions, respiratory droplets)

• Airborne transmission of the virus can occur in health care settings during aerosol-generating procedures.

• Some outbreak reports related to indoor crowded spaces have suggested the possibility of aerosol transmission, combined with droplet transmission, for example, in restaurants or in fitness classes.

• Transmission of COVID-19 is primarily occurring from people when they have symptoms, and can also occur just before they develop symptoms when in close proximity to others for prolonged periods of time.

• While someone who never develops symptoms can also pass the virus to others, it is still not clear to what extent this occurs and more research is needed in this area.

• But more research is “urgently needed to investigate such instances and assess their significance for transmission of COVID-19.”

Source: https://www.who.int/news-room/commentaries/detail/transmission-of-sars-cov-2-implications-for-infection-prevention-precautions
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