False negative rapid Covid tests create confusion for people with obvious symptoms

A study out of the Harvard School of Public Health noted that some strains were harder to locate using a rapid test than others. “The delta variant was more difficult to detect, it had a higher limit of detection than omicron. This may relate to the omicron subvariants because some of the strains of the omicron subvariant do have mutations in the gene that’s detected by the antigen test,” said Ph.D. candidate Sydney Stanley. Source:Continue…

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Filtration Efficiency of Hospital Face Mask Alternatives Available for Use During the COVID-19 Pandemic | Infectious Diseases | JAMA Internal Medicine | JAMA Network

Question: How effective are the aerosol filtration efficiencies for fitted face mask alternatives used during the coronavirus disease 2019 pandemic? Findings: In this quality-improvement study of 29 fitted face mask alternatives, expired N95 respirators with intact elastic bands and masks that had been subjected to ethylene oxide and hydrogen peroxide sterilization had unchanged fitted filtration efficiencies (FFEs) of more than 95%, while the performance of N95 respirators in the wrong size resulted in decreased FFEsContinue…

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Efficacy of Ivermectin Treatment on Disease Progression Among Adults With Mild to Moderate COVID-19 and Comorbidities: The I-TECH Randomized Clinical Trial | Complementary and Alternative Medicine | JAMA Internal Medicine | JAMA Network

Question Does adding ivermectin, an inexpensive and widely available antiparasitic drug, to the standard of care reduce the risk of severe disease in patients with COVID-19 and comorbidities?Findings In this open-label randomized clinical trial of high-risk patients with COVID-19 in Malaysia, a 5-day course of oral ivermectin administered during the first week of illness did not reduce the risk of developing severe disease compared with standard of care alone.Meaning The study findings do not supportContinue…

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