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1/. The #HerdImmunity strategy depends on people developing immunity to #COVID19.
But immunity to other human coronaviruses (e.g SARS & MERS) usually only lasts between 12 to 37 months.
Studies suggests that we may never develop immunity against Covid19. https://www.scmp.com/news/china/science/article/3089476/there-may-be-no-immunity-against-covid-19-new-wuhan-study">https://www.scmp.com/news/chin...
But immunity to other human coronaviruses (e.g SARS & MERS) usually only lasts between 12 to 37 months.
Studies suggests that we may never develop immunity against Covid19. https://www.scmp.com/news/china/science/article/3089476/there-may-be-no-immunity-against-covid-19-new-wuhan-study">https://www.scmp.com/news/chin...
2/. Immunity is not standard for each person & it is not clear whether temporary immunity is the result of the virus mutating or because the body can’t defeat it long term.
Either way, it seems widely accepted that immunity to #COVID19 will be temporary.
https://twitter.com/adamhamdy/status/1273527148758827008?s=21">https://twitter.com/adamhamdy... https://twitter.com/adamhamdy/status/1273527148758827008">https://twitter.com/adamhamdy...
Either way, it seems widely accepted that immunity to #COVID19 will be temporary.
https://twitter.com/adamhamdy/status/1273527148758827008?s=21">https://twitter.com/adamhamdy... https://twitter.com/adamhamdy/status/1273527148758827008">https://twitter.com/adamhamdy...
3/. People don’t seem to understand antibodies do not equal immunity.
For our immune system, some microbes don’t leave a strong impression. (e.g. the coronaviruses that cause the cold).
Without immunity there’s no permanent vaccine & no herd immunity. https://www.smithsonianmag.com/science-nature/can-you-become-immune-sars-cov-2-180974532/">https://www.smithsonianmag.com/science-n...
For our immune system, some microbes don’t leave a strong impression. (e.g. the coronaviruses that cause the cold).
Without immunity there’s no permanent vaccine & no herd immunity. https://www.smithsonianmag.com/science-nature/can-you-become-immune-sars-cov-2-180974532/">https://www.smithsonianmag.com/science-n...
4/. Despite this, some countries are overtly or covertly attempting a #HerdImmunity strategy.
A new study shows only 6.1% of Sweden& #39;s population had developed coronavirus antibodies by late May.
The architect of the policy had hoped for 40% in Stockholm. https://www.businessinsider.com/coronavirus-hopes-fade-for-swedens-herd-immunity-experiment-2020-6">https://www.businessinsider.com/coronavir...
A new study shows only 6.1% of Sweden& #39;s population had developed coronavirus antibodies by late May.
The architect of the policy had hoped for 40% in Stockholm. https://www.businessinsider.com/coronavirus-hopes-fade-for-swedens-herd-immunity-experiment-2020-6">https://www.businessinsider.com/coronavir...
5/. COVID antibody tests are being rolled out without "adequate assessment", experts in BMJ warn.
The test show if someone has developed antibodies but doesn’t prove they have immunity against future attacks or if they could transmit the virus to others. https://www.bbc.com/news/health-53169618">https://www.bbc.com/news/heal...
The test show if someone has developed antibodies but doesn’t prove they have immunity against future attacks or if they could transmit the virus to others. https://www.bbc.com/news/health-53169618">https://www.bbc.com/news/heal...
6/. In this excellent thread, professor @BallouxFrancois says: "While there is still no established case of #COVID19 reinfection to date, it is likely those will be observed soon due to fairly fast waning antibodies." #SARSCoV2 #coronavirus #COVID #Corona https://twitter.com/BallouxFrancois/status/1277885591376535553">https://twitter.com/BallouxFr...
