1/B
Some sources on this for those curious about how long antibodies against SARS-CoV-2 persist after infection.
I'll focus on longitudinal studies that test and re-test the same infected people.
Some sources on this for those curious about how long antibodies against SARS-CoV-2 persist after infection.
I'll focus on longitudinal studies that test and re-test the same infected people.
https://twitter.com/AtomsksSanakan/status/1301778871897948160
2/B
Also, I'll focus on studies that did representative sampling of the general population.
So no sampling just hospital patients, blood donors, healthcare workers, etc.
St. Petersburg, Russia:
medrxiv.org/content/10.110…
eusp.org/en/news/over-1…
Also, I'll focus on studies that did representative sampling of the general population.
So no sampling just hospital patients, blood donors, healthcare workers, etc.
St. Petersburg, Russia:
medrxiv.org/content/10.110…
https://twitter.com/AtomsksSanakan/status/1343261064016908289
eusp.org/en/news/over-1…
3/B
Great Britain (England + Scotland + Wales):
ukbiobank.ac.uk/media/x0nd5sul…
gov.uk/government/pub…
Great Britain (England + Scotland + Wales):
https://twitter.com/AtomsksSanakan/status/1343270117271068675
ukbiobank.ac.uk/media/x0nd5sul…
gov.uk/government/pub…
4/B
Jersey:
(round 2 was in late May, round 3 was in late June;
26 / 37 = ~70%)
gov.je/SiteCollection…
gov.je/SiteCollection…
gov.je/SiteCollection…
Jersey:
(round 2 was in late May, round 3 was in late June;
26 / 37 = ~70%)
gov.je/SiteCollection…
gov.je/SiteCollection…
gov.je/SiteCollection…
5/B
USA: Utah (counties such as Davis, Salt Lake, etc)
medrxiv.org/content/10.110…
"[...] during the what is now the second half of the pandemic in Utah (mid-June to mid-September) compared to the first three months of the pandemic (mid-March to mid-June)."
issuu.com/ecclesschool/d…
USA: Utah (counties such as Davis, Salt Lake, etc)
medrxiv.org/content/10.110…
"[...] during the what is now the second half of the pandemic in Utah (mid-June to mid-September) compared to the first three months of the pandemic (mid-March to mid-June)."
issuu.com/ecclesschool/d…
6/B
Spain:
(rounds 1: early May;
round 2: late May;
round 3: mid-June)
translation:
"[...] seronegativization [...] of 7.1% (95% CI: 5.9-8.5) between Round 1 and Round 2 and a 14.4% (95% CI: 12.7-16.3%) between Round 1 and 3 [page 1]"
portalcne.isciii.es/enecovid19/inf…
Spain:
(rounds 1: early May;
round 2: late May;
round 3: mid-June)
translation:
"[...] seronegativization [...] of 7.1% (95% CI: 5.9-8.5) between Round 1 and Round 2 and a 14.4% (95% CI: 12.7-16.3%) between Round 1 and 3 [page 1]"
portalcne.isciii.es/enecovid19/inf…
7/B
Additional steps are needed, such as adjusting for test specificity + sensitivity. But this list is just for review.
(ex: the study in 5/B uses a test with ~83% sensitivity, so its sample size and ~22% result is compatible with ~0% seroreversion)
medrxiv.org/content/10.110…
Additional steps are needed, such as adjusting for test specificity + sensitivity. But this list is just for review.
(ex: the study in 5/B uses a test with ~83% sensitivity, so its sample size and ~22% result is compatible with ~0% seroreversion)
medrxiv.org/content/10.110…
8/B
More details on the course of seroreversion from the UK Biobank study in part 6/B.
Unsurprisingly, antibody titers stay elevated post-infection for months in the vast majority of people.
@CovidSerology
gov.uk/government/pub…
ukbiobank.ac.uk/media/x0nd5sul…
More details on the course of seroreversion from the UK Biobank study in part 6/B.
Unsurprisingly, antibody titers stay elevated post-infection for months in the vast majority of people.
@CovidSerology
gov.uk/government/pub…
ukbiobank.ac.uk/media/x0nd5sul…
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