CDC-backed study shows differences between Delta and Omicron — Action News Now

A new study shared by the director of the CDC shows that a variant of the coronavirus is much less dangerous but much more transmissible


While a Southern California study suggests that the Omicron variant of the coronavirus is much milder than the Delta virus, U.S. health authorities continue to insist on vaccinations, boosters and masks as hospitals are “strained.”

Rochelle Walensky, director of the U.S. Centers for Disease Control and Prevention (CDC), shared on Wednesday the results of a new study supported by the agency that showed differences between two variants of the SARS-CoV-2 virus.


A team of scientists from the University of California, Berkeley, health care provider Kaiser Permanente and the CDC analyzed data from nearly 70,000 people in Southern California and plugged it into their model.The results of a preprint of their study were published in MedRXiv Tuesday.

Walensky tweeted that the study showed Omicron had a 53% lower risk of symptomatic hospitalization, a 74% lower risk of admission to an intensive care unit, a 91% lower risk of death, and zero patients requiring a ventilator.


This is based on a study that analyzed 52,297 people who tested positive for Omicron and 16,982 people who tested positive for Delta between November 30, 2021, and January 1, 2022. Of these, 235 (0.5%) were hospitalized with Omicron and 222 (1.3%) were infected with Delta.

Putative Omicron infection during the cycle of both variants “Associated with significantly reduced risk of serious clinical endpoints and shorter hospital stays,” According to research.

However, Varensky did not quite win, he warned follow up tweets Omicron may be less severe, but “more contagious.”

“We’re seeing unprecedented impact,” The CDC director said more than a million positive tests were recorded in a single day, “99% of high transmission counties [and] Stressed healthcare system. “


“Preventing Covid-19: Get vaccinated + boost immunity, wear a mask, stay home when sick,” she added.