Infectivity of COVID-19
The coronavirus stands out due to its high infectivity rate, which allows it to spread more aggressively than other viruses. The key to its entry into the body lies in the ACE2 receptors, which are prevalent in various organs and particularly in the oral cavity. This explains why certain populations, like older males who smoke, were more affected early in the outbreak, as smoking increases the expression of these receptors. Upon infection, the virus triggers an inflammatory response from the immune system, complicating the body's reaction to the virus.In this clip
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