Eh?
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Replying to @DavidLevan15 @GidMK
That's an inherent component of the herd immunity approach.
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Replying to @DavidSteadson @GidMK
Are you saying natural immunity is a bad thing?
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That doesn't make sense. The immunity we get from viral infections is what protects us in the future. It's not a strategy. It's the way the body works. Vaccines are normally used in infections which are much more serious and deadly than Covid 19.
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Your last sentence needs a lot more research.
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Are you thinking of flu perhaps? We only need a vaccine for that because it mutates, and we lose our natural immunity. Complications can be serious and lead to many deaths most years - except so far this year for some some reason.
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Of vaccine-preventable diseases, most are less lethal than COVID-19. E.g. measles has a fatality rate of ~0.2%, which is fairly stable across age groups. Pertussis is extremely problematic for infants, but almost never kills adults. Mumps can cause infertility but rarely kills
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Polio is disabling and an awful affliction, but most cases are asymptomatic and so the death rate is quite a bit below COVID-19. Rubella is usually very mild, but since it causes extreme birth defects it's very important to vaccinate against
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