New virus variants threaten a summer Covid-19 wave, but experts say the risk remains uncertain | CNN Covid-19 levels are about the lowest they’ve ever been in the United States, but another new crop of virus variants once again threatens to disrupt the downward trend as the country heads into summer. Deidre McPhillips CNN

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The mutations of the FLiRT variants make increased transmissibility — and a possible summer wave — a real threat. Covid-19 is settling into some seasonal patterns, which have included a summer bump in years past, but the exact level of risk for this year is unclear.

Study: Before vaccines, 44% of COVID-19 patients in ICU died A new analysis of pre-vaccine data from scientists at the Centers for Disease Control and Prevention (CDC) shows that 18% of hospitalized patients and 44% of those admitted to an intensive care unit (ICU) for COVID-19 died, with wide variations among different groups.  CIDRAP

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Before the mid-December 2020 introduction of COVID-19 vaccines, the pandemic caused approximately 480,000 hospitalizations, and 350,000 deaths in the United States.

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How fast is bird flu spreading in US cows? ‘We have no idea’

Avian flu is spreading rapidly among cattle, but public health and infectious disease experts are concerned the United States is too limited in its testing, leaving an incomplete picture of the virus’s spread.  

The threat to the general public is currently low, health officials say, and the country’s milk supply is safe. Just one person has been infected. ...

But the outbreak is widespread; officials have found the virus in 42 herds across nine states. Dairy farm workers are at risk every time they are exposed to potentially infected cattle, and viral mutations could cause an outbreak, experts warn.  

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