Research finds negativity about vaccines surged on Twitter after COVID-19 shots became available There was a marked increase in negativity about vaccines on Twitter after COVID-19 vaccines became available, according to a presentation at the ESCMID Global Congress (formerly ECCMID) in Barcelona, ... Science X Medical Xpress

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The analysis also found that spikes in the number of negative tweets coincided with announcements from governments and health care authorities about vaccination.

Teen vaccination cut COVID-19 cases by 37% in California, new data show Researchers also estimated that 230,134 cases were averted in kids aged 5 to 11 years, a 24% reduction. CIDRAP

JAMA Network Open has published a new study showing that, from April 1, 2020, to February 27, 2023, in California, an estimated 146,210 COVID-19 cases were averted by vaccination in teens aged 12 to 15 years, representing a 37% reduction.

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Massive amounts of H5N1 vaccine would be needed if there's a bird flu pandemic. Can we make enough? The first signs that H5N1 avian flu was starting to spread from person to person would trigger a race to produce massive amounts of vaccine. Helen Branswell STAT

There is no way to predict if the virus will acquire the capacity to spread between people, or when and under what conditions it would make that fateful leap if it does.