Differential Diagnosis

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showing posts for 'immunity'

Five reasons why COVID herd immunity is probably impossible Christie Aschwanden. Nature 2021 591:7851.

blog post image Even with vaccination efforts in full force, the theoretical threshold for vanquishing COVID-19 looks to be out of reach. Even with vaccination efforts in full force, the theoretical threshold for vanquishing COVID-19 looks to be out of reach.

Why Are COVID-19 Case Numbers Dropping?

blog post image "We don’t know. That part is easy. Also easy is that case numbers really are falling — it’s not just reduced testing — and it’s happening pretty much everywhere. Urban areas and rural. Red states and blue. Places with broad vaccine rollouts and those with hardly any. North and South America,...

England's current lockdown could be the last

blog post image England's current lockdown could be the last, says Neil Ferguson: Expert says growing immunity means England could be in tier 1 or 2 measures by May.

Robust T cell immunity in convalescent individuals with asymptomatic or mild COVID-19

blog post image "Our collective dataset shows that SARS-CoV-2 elicits robust, broad and highly functional memory T cell responses, suggesting that natural exposure or infection may prevent recurrent episodes of severe COVID-19."

Immunity to COVID-19 is probably higher than tests have shown: New research from Karolinska Institutet and Karolinska University

blog post image Immunity to COVID-19 is probably higher than tests have shown: New research from Karolinska Institutet and Karolinska University Hospital shows that many people with mild or asymptomatic COVID-19 demonstrate so-called T-cell-mediated immunity to the new coronavirus, even if they have not tested positively...

SARS-CoV-2-specific T cell immunity is seen in cases of COVID-19

blog post image SARS-CoV-2-specific T cell immunity in cases of COVID-19 and SARS, and uninfected controls: Memory T cells induced by previous pathogens can shape the susceptibility to, and clinical severity of, subsequent infections1. Little is known about the presence of pre-existing memory T cells in humans with...