New answers tagged covid-19
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Apparently no reports from that German experience, but recently researchers published a working paper with the results of "A randomized-trial of community-level mask promotion in rural Bangladesh during COVID-19 shows that the intervention tripled mask usage and reduced symptomatic SARS-CoV-2 infections ..."
https://www.poverty-action.org/...
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JAMA has a randomized clinical trial in 2019: "N95 Respirators vs Medical Masks for Preventing Influenza Among Health Care Personnel". The finding is "there was no significant difference in the incidence of laboratory-confirmed influenza".
Regarding Bavaria's N95/FFP2 respirator mandate, there's a graph of Bavaria vs Germany daily new ...
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Well, I haven't found that one, but it's probably covering the same data as the preprint that impressed Fauci.
Twelve days or more after the booster dose we found an 11.4-fold (95% CI: [10.0, 12.9]) decrease in the relative risk of confirmed infection, and a >10-fold decrease in the relative risk of severe illness. Under a conservative sensitivity ...
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Google Scholar is another good place to try to find a freely available PDF for a given article.
https://www.medrxiv.org/: preprints of medical papers
https://www.biorxiv.org/: preprints of biology papers
https://connect.medrxiv.org/relate/content/181: COVID-specific articles.
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PubMed comprises more than 32 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.
After you search using the search box on the main web site, select in the left column this filter:
text availability: free full text.
...
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This may not be exactly the controls you want, but here is news about one study that compared "long Covid" symptoms in vaccinated (breakthrough infection) vs unvaccinated:
In a study published Wednesday in the Lancet Infectious Diseases journal, scientists at King’s College London surveyed more than one million fully vaccinated volunteers who used ...
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It's often useful to search on a big database (like PubMed) to find articles you're interested in, then next try to figure out how to access them.
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There are several open access journals and collections that you can search.
The Journal of the American Medical Association (JAMA) Open Access network.
The New England Journal of Medicine allows open access to certain articles.
Several journals in the Lancet family are open access.
The British Medical Journal has an open access counterpart, BMJ Open.
Also, ...
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There is no conflict.
Currently there is no evidence
means there is no evidence. It doesn't mean there is evidence against, it means that there is no evidence. They don't know of a person who has caught COVID-19 through food that was not exposed in some other way. The lack of evidence is suggestive that this isn't a major route of spread, though.
It may ...
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First, the question is pretty badly framed as there's can't be a "consensus on the rate of breakthrough infections with delta and pfizer vaccine" simply because that absolute risk depends on prevalence in a country/region. Second, as you'll see, it depends on when the vaccine was administered (relative to when the PCR test is made.)
What the Israel ...
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I'll note that a more recent "room simulation" paper was published in Science (a top journal). This paper was basically based on a Fangcang Hospital simulation (200 people in a 500m2 x 10m high hall--see supplementary material) and lots of data on infectious dose estimates, mask filtration efficiency etc., but neither the authors of the paper nor ...
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