x

Health

Booster Shots Needed Against Omicron, CDC Studies Show

January 21, 2022

NEW YORK — Three studies released Friday offered more evidence that COVID-19 vaccines are standing up to the omicron variant, at least among people who received booster shots.

They are the first large U.S. studies to look at vaccine protection against omicron, health officials said.

The papers echo previous research — including studies in Germany, South Africa and the U.K. — indicating available vaccines are less effective against omicron than earlier versions of the coronavirus, but also that boosters significantly improve protection.

The first study looked at hospitalizations and emergency room and urgent care center visits in 10 states, from August to this month.

It found vaccine effectiveness was best after three doses of the Pfizer or Moderna vaccines in preventing COVID-19-associated emergency department and urgent care visits. Protection dropped from 94% during the delta wave to 82% during the omicron wave. Protection from just two doses was lower, especially if six months had passed since the second dose.

The second study focused on COVID-19 case and death rates in 25 states from the beginning of April through Christmas. People who were boosted had the highest protection against coronavirus infection, both during the time delta was dominant and also when omicron was taking over.

Those two articles were published online by the Centers for Disease Control and Prevention.

The Journal of the American Medical Association published the third study, also led by CDC researchers. It looked at people who tested positive for COVID-19 from Dec. 10 to Jan. 1 at more than 4,600 testing sites across the U.S.

Three shots of the vaccines were about 67% effective against omicron-related symptomatic disease compared with unvaccinated people. Two doses, however, offered no significant protection against omicron, the researchers found.

“It really shows the important of getting a booster dose,” said the CDC’s Emma Accorsi, one of the study’s authors.

RELATED

HONOLULU — Hawaii's Mauna Loa, the world's largest active volcano, has started to erupt for the first time in nearly four decades, prompting volcanic ash and debris to fall nearby, authorities said Monday.

Top Stories

Columnists

A pregnant woman was driving in the HOV lane near Dallas.

General News

FALMOUTH, MA – The police in Falmouth have identified the victim in an accident involving a car plunging into the ocean on February 20, NBC10 Boston reported.

General News

NEW YORK – Meropi Kyriacou, the new Principal of The Cathedral School in Manhattan, was honored as The National Herald’s Educator of the Year.

Video

Hawaii’s Mauna Loa Starts to Erupt, Sending Ash Nearby (Video)

HONOLULU — Hawaii's Mauna Loa, the world's largest active volcano, has started to erupt for the first time in nearly four decades, prompting volcanic ash and debris to fall nearby, authorities said Monday.

WASHINGTON — Jurors who will decide whether to convict Oath Keepers founder Stewart Rhodes and four associates of seditious conspiracy resumed deliberations Monday in the high-stakes trial stemming from the U.

NEW YORK — Days after flocking to stores on Black Friday, consumers are turning online for Cyber Monday to score more discounts on gifts and other items that have ballooned in price because of high inflation.

HOUSTON — More than 2 million people in the Houston area were under a boil order notice Monday after a power outage caused low pressure at a water purification plant, officials said.

For Ryan Decker, surviving the holiday shopping season is all about planning ahead.

Enter your email address to subscribe

Provide your email address to subscribe. For e.g. abc@xyz.com

You may unsubscribe at any time using the link in our newsletter.