Rochelle Walensky, the director of the federal Centers for Disease Control and Prevention (CDC), warned on Monday that a recent increase in coronavirus cases indicated a “fourth surge” could occur before a majority of the US is vaccinated.
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“At this level of cases, with variants spreading, we stand to completely lose the hard-earned ground we have gained,” Walensky said, during a White House briefing.
“Now is not the time to relax the critical safeguards that we know can stop the spread of Covid-19 in our communities, not when we are so close. We have the ability to stop a potential fourth surge of cases in this country.”
According to Johns Hopkins University, the US has recorded more than 28.5m Covid-19 cases and nearly 513,000 deaths. Daily case numbers fell steeply after a peak in January but have started to increase again.
Jeff Zients, coordinator of the White House coronavirus response team, said the single-shot Johnson & Johnson vaccine which was approved for use on Saturday would start to be delivered “as early as tomorrow”.
According to Zients, Johnson & Johnson is ready to distribute 3.9m doses over the coming days, adding to a vaccine stockpile already supplied by Pfizer-BioNTech and Moderna, which both developed two-shot vaccines.
But he added: “J&J has indicated that the supply will be limited for the next couple of weeks.”
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