Spread 1000 Times More By Air Than By Surface
claimed in the study
This claim has been made in a study. Researchers from the University of Michigan in the US took samples from the air and surfaces during an environmental observation program on their campus from August 2020 to April 2021.
How was the study done?
The study, published last week in the 'Journal of Exposure Science and Environmental Epidemiology', took samples from public places such as classrooms, exercise rooms, cafeterias, buses and gyms, and from windows, skylights and ventilation ducts etc. "The risk of surface infection was found to be 1,000 times lower than the risk of airborne infection," said Professor Chuanwu Xi from the university's School of Public Health.
How was the equipment used?
Xi (Professor Chuanwu Xi) and his colleagues used such instruments for air samples that would draw a large amount of air through a pump and also detect any viruses present in it. .
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