Delta Variant Detected in 99 p.c of U.S. circumstances, C.D.C. Says

The extraordinarily transmissible Delta variant of the coronavirus, which overtook all different variants in the USA only a few months in the past, now represents greater than 99 p.c of circumstances tracked within the nation, based on the information from the Facilities for Illness Management and Prevention.

The variant brought on caseloads to surge in Britain and India this spring and summer time, and in each international locations outbreaks resurfaced after circumstances had gave the impression to be on the decline. The Delta variant has been fueling outbreaks in the USA all through the summer time, its contagiousness benefiting from the quantity of people that have resist Covid vaccinations.

The information on Delta’s prevalence, contained within the C.D.C.’s newest biweekly report of virus sequencing, exhibits it climbing from simply over 1 / 4 of circumstances in mid-June to close complete dominance in September.

“It’s not sudden, as a result of it’s extra transmissible, however it’s also a robust reminder that we have to have steady vigilance,” mentioned Dr. Saskia Popescu, an epidemiologist and assistant professor at George Mason College.

Vaccination and wearing masks can help, she said.

“We have transmission occurring with very limited exposure, and that means that, for example, times without a mask, when you are out and around others, become much more of a risk,” Dr. Popescu said.

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