A blog post by University of Massachusetts Dartmouth professor, Dr. Erin Bromage, who studies immunity of infectious diseases in animals, titled 'The Risks - Know Them - Avoid Them' garnered major attention for showing that some of the highest risk areas may not be what you'd expect. The
Recommendations on how to protect ourselves from contracting the virus that causes COVID-19 are everywhere, like washing your hands, wearing a mask, and staying at least 6 feet away from people outside your home. But not all risks are created equal; home, public transportation and the grocery store all have different challenges.
Some of the biggest outbreaks, excluding nursing homes, in fact, that have been reported and traced occurred in prisons, religious ceremonies, choir practices, indoor sporting events, and even birthday parties. A single sneeze, according to Bromage, has been estimated to release about 30,000 droplets that can travel up to 200 miles per hour, which means it could easily cross a room. A cough releases round 3,000 droplets that can travel around 50 miles per hour. These particles may drop to the ground or could hang around in the air for a short period of time.
Bromage underscores that the exact number of people infected by respiratory droplets versus transmission through touching contaminated objects like door handles and elevator buttons is unknown, which is why it's also important to wash your hands often and avoid touching your face. But the compilation of studies he wrote,"serves to highlight that being in an enclosed space, sharing the same air for a prolonged period increases your chances of exposure and infection.
So far, the science seems to suggest that outdoor areas and large ventilated spaces are the lowest risk areas for infection. Outdoor areas are generally safer because wind and infinite air space could dilute the viral particles circulating. If you are actively moving outside that also reduces the exposure time to any viral particles hanging around.
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