Paramedics arrive with a patient with Covid-19 at the emergency department of Sharp Memorial Hospital in San Diego, California.Bing Guan | Bloomberg | Getty ImagesNew cases of Covid-19 are once again on the rise across more than half of the United States as officials race to vaccinate additional people before highly contagious variants become prevalent in the country.As of Sunday, the seven-day average of new cases rose by 5% or more in 27 states, according to a CNBC analysis of data compiled by Johns Hopkins University. Across the U.S., the nation logged an average of 54,308 new cases per day over the …
