why does COVID-19 keep mutating to require new vaccines while smallpox, mumps, polio, etc. don't?

 

hy does COVID-19 keep mutating to require new vaccines while smallpox, mumps, polio, etc. don't?

Jennifer Larson

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Studied Nursing at University of South Dakota (Graduated 1996)Dec 6

Because in order to mutate, a virus has to be able to infect new hosts and rewrite the DNA inside the host's cells to replicate itself. A virus also can't survive unless it does this.

Enough people have been vaccinated for these diseases that the disease has been eradicated (smallpox) or close to it. There aren't enough people susceptible to these diseases in a community for it to gain a foothold. So even people who, for whatever reason, are still susceptible, they won't know it because they aren't exposed to it. This is how herd immunity works.

Covid still has plenty of susceptible people to infect and in large enough numbers for it to mutate and create variants. This is what viruses do.

The pandemic will continue as long as there are susceptible hosts for COVID to infect. The variants will continue until the number of susceptible hosts drastically decreases.

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Gravitas: China starts demolishing Tibetan structures

 

 

 

 

States, Churches, Armies, which of these dogs wishes to die first? None! is the reply/ Rause saith/ they do what they do always and ever unless governed by the democratic machine and its rotational motors

 

 

 

 'China has begun a fresh assault on Tibetans. 2 Buddha statues have been destroyed in Sichuan. A monastery has been demolished, prayer wheels removed, flags burnt, monks beaten and jailed. China forced Tibetans to watch this assault on their religion. Palki Sharma has the details.' #Gravitas #China #Tibet 

 

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Two-State Solution Debate | Gideon Levy | Proposition / from June 2016

 

 

 

 

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 The Motion: 

 

 

This House Believes a Two-State Solution in the Middle East is Unattainable. 

 

 

Gideon Levy closes the case for the Proposition, as the seventh speaker of eight in the debate. The motion was defeated. ABOUT THE OXFORD UNION SOCIETY: The Oxford Union is the world's 

 

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