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Updated Dec 24, 2020 | 10:39 IST According to the Institute for Health Metrics and Evaluation (IHME) in Seattle, Washington, 55,000 lives could be saved in the United States over the next four months. Masks block 99.9 per cent of large COVID-19 droplets, finds study  |  Photo Credit: iStock Images Face masks reduce the risk of spreading large Covid-linked droplets when speaking or coughing by up to 99.9 percent, according to a lab experiment with mechanical mannequins and human subjects, researchers said Wednesday. A woman standing two metres (yards) from a coughing man without a mask will be exposed to 10,000 times more such droplets than if he were wearing one, even if he is only 50 centimetres away, they reported in the journal Royal Society Open Science.

United statesIgnazio maria violaMaria violaUniversity of edinburgh school engineeringWorld health organizationRoyal society open scienceInstitute for health metricsPhoto creditStock imagesRoyal society openHealth metricsஒன்றுபட்டது மாநிலங்களில்மரியா வயலபல்கலைக்கழகம் ஆஃப் எடின்பர்க் பள்ளி பொறியியல்உலகம் ஆரோக்கியம் ஆர்கநைஸேஶந்அரச சமூகம் திறந்த அறிவியல்