I think the results are consistent with short range aerosols as well. Highest concentration of aerosols would follow the airflow, I think. How far could the larger droplets travel? Low concentration aerosols from source would only pose a low risk to other diners
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There was quite a few in the early days of the virus, partly because contact tracing was so much easier when it was just Wuhan, and someone from there traveled somewhere else.
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