America is at a vulnerable place within the battle against Covid-19 -- with many hospitals overwhelmed and a new school year already upended -- and health officials are racing to expand vaccine protection for those most at risk.
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More children are being admitted to hospitals with Covid-19 as health systems struggle to deal with surge of new patients
More children are being hospitalized with Covid-19 as health systems struggle to cope with a surge in new patients and officials race to expand vaccine protection.
