Factors that increased the risk of transmission
deepening
Covid in Italy and in the world, the news of today 30 June. DIRECT
The research team also identified the factors that most increased the likelihood of long-distance transmission, including insufficient air exchange, the presence of directional airflow and activities associated with increased aerosol emission, such as singing. or speak out loud. In addition, in 13 of the 16 studies, subjects believed to be the source of the infection were asymptomatic, pre-symptomatic, or were starting to have symptoms at the time of transmission.
The importance of adequate ventilation
“This systematic review found evidence to suggest that long-distance airborne transmission of SARS-Cov-2 can occur indoors, such as restaurants, workplaces and choirs,” the researchers reported. “These findings reinforce the need for indoor mitigation measures, particularly the use of adequate ventilation.” For this, the researchers warned, “well-conducted investigations continue to be needed to assess the potential for long-distance airborne transmission in people vaccinated and with more transmissible Sars-Cov-2 variants, such as Omicron.”