COVID SCIENCE-mRNA vaccines spur lymph nodes for longer-term protection; COVID-19 test accuracy may vary by time of day – Yahoo Finance

(https://bit.ly/3tnAiYw) Throat swab test precision may vary by time of dayThe precision of gold-standard PCR tests of nasopharyngeal swab samples might vary by time of day, new information suggest. Scientist evaluated 31,094 tests carried out in asymptomatic and symptomatic individuals at 127 screening sites, including 2,438 tests that showed COVID-19. In a paper published on Saturday on medRxiv ahead of peer review, they report tests were most likely to be positive around 2 p.m. – and the percentage of favorable tests in the early afternoon was two-fold higher than the lowest percentage seen at other times of the day.

In healthy volunteers, blood tests revealed that two dosages of the Pfizer/BioNTech vaccine induced “a strong plasmablast response,” stated coauthor Ali Ellebedy of Washington University School of Medicine in St. Louis. (https://bit.ly/3tnAiYw) Throat swab test precision may vary by time of dayThe precision of gold-standard PCR tests of nasopharyngeal swab samples may differ by time of day, new information recommend. Researchers evaluated 31,094 tests carried out in symptomatic and asymptomatic people at 127 testing sites, including 2,438 tests that revealed COVID-19. In a paper posted on Saturday on medRxiv ahead of peer evaluation, they report tests were most likely to be positive around 2 p.m. – and the percentage of positive tests in the early afternoon was two-fold higher than the lowest percentage seen at other times of the day.

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