Wearing face masks, people walk through Union Station in Los Angeles on June 29. California is one of the 24 states seeing an uptick in Covid-19 cases.
Mandatory Credit: Francine Orr/Los Angeles Times/Getty Images
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Delta variant is 'Covid-19 on steroids,' expert says, with cases increasing in nearly half of US states
Twenty-four states have seen an uptick of at least 10% in Covid-19 cases over the past week, Johns Hopkins University data shows, as health experts and the federal government keep pressing for more people to get vaccinated.
