Peter Attia· MD
one thing is really curious as SARS doesn't affect the upper airway to appreciable even though it uses a single scepter there's also one of the common cold corona viruses in o63 uses a stew only protects the upper airway and doesn't affect the longest any appreciable excellent and that could also account for the change in transmissibility because if you are only infecting the lower airway you're probably less transmissible than SARS Co v2 which can infect both