Part 7/13:
The virus's genetic variations, more than 100 identified mutations so far, particularly on the spike protein (the "key" to human cells), are carefully monitored. Changes in the spike protein may increase infectivity, posing challenges for vaccine development and effectiveness. The virus prefers not to kill its host, favoring adaptations that maximize transmission, but there's always concern about potential mutations that could produce a more virulent strain capable of causing more severe disease or circumventing immunity.