again, this doesn’t kick in when there’s a long period in the initial phase of the disease where your symptoms are mild or non existent and you’re still spreading. in particular this trend is contradicted by the b.1.1.7 variant
they estimated seroprevalence at 76% 8 months ago. it could be that the immunity declines over that timespan or that it evades immunity, but this has to be combined with the fact that the mutation modifies the spike proteins and the vaccines are showing reduced effectiveness
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That study has some methodological problemshttps://twitter.com/BuenoEnfurecido/status/1356968077620051970 …
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1.- is not sure the percentage 2.- it’s been said, a year ago, that this C19 would become seasonal, like respiratory illnesses, like flu... 3.- a really bad illness was the Spanish flu; take a look to the data.
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a disease like this becoming endemic and seasonal is a disaster for humanity. it is harder to control than the flu and is baseline, probably, more infectious / deadly. yes it may not mutate as much per infection but we are giving it far to many chances to do so.
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