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3 things to remember:

1. it only takes 5 amino acid substitutions to produce an H5N1 that is mammal-to-mammal airborne

2. it took the WHO 2 years to admit SARSCoV2 was airborne, and 4 years to integrate that admission into public guidance

3. influenza viruses evolved to spread through the air, and airborne pathogens make the best superspreaders, no matter how much RNA they find in milk

#FluIsAirborne #CovidIsAirborne