Dominant Coronavirus Strain Appears to Be a Mutated, More Virulent Version, Study Finds

The genetic variation of the novel coronavirus that dominates the world today infects human cells more readily than the original that emerged in China, according to a new study published in the journal Cell on Thursday. ​The lab-based research […]

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Masks for Prevention of Respiratory Virus Infections, Including SARS-CoV-2, in Health Care and Community Settings: A Living Rapid Review

Abstract Background: Recommendations on masks for preventing coronavirus disease 2019 (COVID-19) vary. Purpose: To examine the effectiveness of N95, surgical, and cloth masks in community and health care settings for preventing respiratory virus infections, and effects of reuse or […]

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Texas Governor Hits ‘Pause’ On Further Reopening Amid COVID-19 Surge

Texas Gov. Greg Abbott said the state will put a hold on further reopening as it contends with rising numbers of coronavirus cases and hospitalizations. Updated at 12:45 p.m. ET Texas Gov. Greg Abbott has announced the state will […]

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What we know about ACE2, the mystery enzyme behind Covid-19

During the first chaotic months of the Covid-19 pandemic, it was already clear that the novel coronavirus spreading around the world didn’t affect everyone equally. The earliest clinical data out of China showed that some people consistently fared worse […]

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Sweden’s lax COVID-19 response caused too many deaths, country’s top epidemiologist says

Anders Tegnell, the state epidemiologist of the Public Health Agency of Sweden, at a press briefing in April 2020 The epidemiologist who led Sweden’s controversial COVID-19 response, which did not involve a strict lockdown, now says that the country […]

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A Randomized Trial of Hydroxychloroquine as Postexposure Prophylaxis for Covid-19

Abstract Coronavirus disease 2019 (Covid-19) occurs after exposure to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). For persons who are exposed, the standard of care is observation and quarantine. Whether hydroxychloroquine can prevent symptomatic infection after SARS-CoV-2 exposure is […]

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Pulmonary pathobiology may differ in COVID-19 vs. H1N1 respiratory failure

Patients who died from COVID-19-associated respiratory failure had more intussusceptive angiogenesis in their lungs than those who died from influenza, according to an autopsy study. For the study, which was published in The New England Journal of Medicine , […]

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