Among fully vaccinated, study shows Paxlovid does not shorten symptoms A new study in the New England Journal of Medicine suggests that, for those fully vaccinated against COVID-19 but having at least one risk factor for severe COVID, the antiviral drug Paxlovid did little to reduce symptom duration, but experts caution the findings might not apply to older patients. CIDRAP

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Bird flu dairy cow outbreak widens in Ohio, Kansas, New Mexico Bird flu has infected a dairy herd in Ohio for the first time and was detected in additional herds in Kansas and New Mexico, according to the U.S. government, expanding an outbreak in cows that has raised concerns about possible risks to humans. Tom Polansek Reuters

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Testing environmental water to monitor COVID-19 spread in unsheltered encampments

To better understand COVID-19's spread during the pandemic, public health officials have expanded wastewater surveillance. These efforts track SARS-CoV-2 levels and health risks among most people, but they miss people who live without shelter, a population particularly vulnerable to severe infection.

To fill this information gap, researchers reporting in Environmental Science & Technology Letters tested flood-control waterways near unsheltered encampments, finding similar transmission patterns as in the broader community and identifying previously unseen viral mutations.

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