US to post influenza A wastewater data online to assist bird flu probe, official says The U.S. Centers for Disease Control and Prevention (CDC) is planning to post data on influenza A found in wastewater in a public dashboard possibly as soon as Friday that could offer new clues into the outbreak of H5N1 bird flu in cattle herds. Julie Steenhuysen Reuters

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UK refuses to sign global vaccine treaty, The Telegraph reports Britain is refusing to sign the World Health Organization's (WHO) pandemic accord because the country says it would have to give away a fifth of its vaccines, the Telegraph reported on Wednesday. Reuters Reuters

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Study: HHS's COVID vaccine campaign saved $732 billion in averted infections, costs The US Department of Health and Human Services' (HHS's) COVID-19 vaccination campaign saved $732 billion by averting illness and related costs during the Delta and Omicron variant waves, with a return of nearly $90 for every dollar spent, estimates a study by HHS and the research firm Fors Marsh. CIDRAP

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Study finds metformin reduces COVID-19 viral load, viral rebound

A team of University of Minnesota researchers found that metformin, a drug commonly used to treat diabetes, can decrease the amount of COVID-19 virus in the body and lower the chances of the virus coming back strongly after initial treatment. The study was published in Clinical Infectious Diseases.