> Application of a SARS vaccine is perhaps best limited to a minimal number of targeted individuals who can be monitored, as some vaccinated persons might, if infected by SARS coronavirus, become asymptomatic excretors of virus, thereby posing a risk to non-vaccinated people.
I wish they didn’t try to suppress this information when posted in various online forums. It is a valid point of concern and people should be allowed to ask why it doesn’t apply to the current vaccines.
autotranslation> The chances that people with SARS could remain "asymptomatic", meaning that carriers could blend into the population without receiving treatment, are small, according to WHO officials (2003).
Can someone add [citation needed]. I remember something like that. SARS was not so difficult to contain because it has no long incubation period and no (too many?) asymptomatic infected persons. Anyway, I'd like to read a better source.
My guess is that against SARS you can mass vaccinate almost everyone, or keep the vaccinated persons under additional watch out, but not something in between.
In the case or covid-19, containment was sadly never a realistic option.
For a somewhat similar case, remember that the first vaccine against polio was injectable and didn't stop transmission, it only makes you don't develop the paralysis. The second one was an oral vaccine and stops the transmission, but has a low risk to mutate and cause paralysis in unvaccinated persons. So now the injectable version is used in countries without cases for many years, and the oral is used in countries with recent cases, and other countries use a mix. More details in https://en.wikipedia.org/wiki/Polio_vaccine#Schedule
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[ 3.8 ms ] story [ 18.8 ms ] threadautotranslation> The chances that people with SARS could remain "asymptomatic", meaning that carriers could blend into the population without receiving treatment, are small, according to WHO officials (2003).
Can someone add [citation needed]. I remember something like that. SARS was not so difficult to contain because it has no long incubation period and no (too many?) asymptomatic infected persons. Anyway, I'd like to read a better source.
My guess is that against SARS you can mass vaccinate almost everyone, or keep the vaccinated persons under additional watch out, but not something in between.
In the case or covid-19, containment was sadly never a realistic option.
For a somewhat similar case, remember that the first vaccine against polio was injectable and didn't stop transmission, it only makes you don't develop the paralysis. The second one was an oral vaccine and stops the transmission, but has a low risk to mutate and cause paralysis in unvaccinated persons. So now the injectable version is used in countries without cases for many years, and the oral is used in countries with recent cases, and other countries use a mix. More details in https://en.wikipedia.org/wiki/Polio_vaccine#Schedule