The only certain thing about the future of SARS-CoV-2 variants is that nothing is certain -- but researchers in the U.S. are doing their best to keep an eye out for the next troublesome variant, even in the face of numerous challenges.
... About 18 million US children under 5 are still not eligible for the protection of a Covid-19 vaccine. Children are less likely than adults to be hospitalized or to die from Covid-19, but at least 400 children age 4 and younger have died from Covid-19, according to the US Centers for Disease Control and Prevention.
Experts say the wait for a vaccine may not be much longer.
Covid cases have continued to rise in the UK, with an estimated one in every 20 people infected, figures from the Office for National Statistic suggest.
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