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  1. Sep 2020
    1. Respiratory droplets are usually divided into two size bins, large droplets (>5 μm in diameter) that fall rapidly to the ground and are thus transmitted only over short distances, and small droplets (≤5 μm in diameter)

      If the probability of infection is proportional the number of viral particles entering the body then larger droplets would be more infectious compared to smaller droplets. It is unclear how many viral particles/droplet are present

    2. For example, since the mutation rate is ~10–6 mutations/site/cycle and an mL of sputum might contain upwards of 107 viral RNAs, we infer that every site is mutated more than once in such samples.

      Thus need not be true cause it is based on a probability measure, right?