The highly contagious nature of SARS-CoV-2 is the main reason for its rapid spread in the entire world including Africa.

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Thank you Professor Marongiu for this important and concise contribution.

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A splendid response sir.

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Luigi Marongiu added an answer

22 hours ago

We got lucky with SARS-CoV because the infection spread to a few hundred people; thus, it was contained as an outbreak. Having contained the contagion and removed the sources of infection (the infected animals and primarily the reservoirs, which were most likely bats), the virus effectively became extinct.

With SARS-CoV2 we were too slow to contain the outbreak, which has evolved into a pandemic. In this situation, the virus is very unlikely to go extinct, even by vaccinating the required 90-95% of the human population. Even with herd immunity, there will be pockets where the virus can multiply and re-emerge.

So, the difference between CoV and CoV2 is that the latter is here to stay. It might re-emerge in localized outbreaks like Ebola virus, or probably evolve into a less pathogenic strain, like the normal cold viruses. But, I think, we will have to live with CoV for a very, very long time.

Warm greetings sir, and to all my friends and associates here.

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The highly contagious nature of SARS-CoV-2 is the main reason for its rapid spread in the entire world including Africa.