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The shots will be important, however, as the U.S. heads into the fall and winter, when cases usually rise again. Vaccine experts select the Covid strain in the spring for a vaccination campaign in the fall. Last fall, when CDC data showed a rise in hospitalizations, some doctors criticized the FDA for waiting too long to roll out the updated Covid vaccines. Has the FDA considered changing the fall vaccine rollout schedule, now early September? Link-Gelles highlighted the challenges in determining the optimal timing for administering the Covid vaccines.

Persons: Will, ”, John Moore, Akiko Iwasaki, Covid —, CDC epidemiologist Ruth Link, that’s, Isaac Bogoch, “, Ofer Levy, Levy, ” Levy, it’s, ” Weill Cornell's Moore, “ I’m, what’s, ” Moore Organizations: Weill Cornell Medical College, “, Centers for Disease Control, Food and Drug Administration, Yale University, FDA, CDC, NBC, University of Toronto, Precision, Boston Children’s Hospital Locations: U.S, hospitalizations

NEW YORK (AP) — The latest versions of COVID-19 vaccines were 54% effective at preventing symptomatic infection in adults, according to the first U.S. study to assess how well the shots work. The shots became available last year and were designed to better protect against more recent coronavirus variants. Studies coming out later this year will assess how effective the shot was at preventing symptoms severe enough to send patients to a doctor's office or hospital, she said. Photos You Should See View All 45 ImagesThe CDC recommends the new shots for everyone 6 months and older, but most Americans haven't gotten them. The latest CDC data suggests only about 22% of U.S. adults have gotten the shots, and only 11% of children.

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☆ Updated Covid boosters cut the infection risk from XBB.1.5 subvariant by half, CDC finds
▼ + stars: | 2023-01-25 | by ( Https | Media-Cldnry.S-Nbcnews.Com Image Upload Newscms Berkeley-Lovelace-Jr.Jpg | Berkeley Lovelace Jr. | ) www.nbcnews.com time to read: +4 min

The updated Covid boosters reduce the risk of Covid infection from the predominant omicron subvariant by nearly half, according to early data published Wednesday by the Centers for Disease Control and Prevention. The findings are “quite reassuring,” Dr. Brendan Jackson, the head of the CDC’s Covid response, said on a call with reporters Wednesday. As of last Wednesday, only about 15% of people in the U.S. had received an updated booster, according to CDC data. People who were vaccinated but had not received the updated booster were compared to those who got the updated booster in the previous two to three months. People who got the updated boosters are probably "much more likely to wear masks indoors or restrain their travel or not go to indoor restaurants," he said.

☆ Omicron booster shots provide some protection against mild illness from Covid XBB subvariants, CDC says
▼ + stars: | 2023-01-25 | by ( Spencer Kimball | ) www.cnbc.com time to read: +2 min

The CDC study published Wednesday provides the first estimate of the omicron booster shots' real-world effectiveness against the XBB family of subvariants. Some scientists have warned the XBB subvariants could cause another Covid wave because they are so good at evading the antibodies that block infections. The study compared people who received the new booster with those who received between two and four doses of the original vaccine. People who only received the original shots generally got their last dose about 13 months ago. But the CDC study found that the omicron boosters provide about as much protection against the XBB family as they do against the BA.5 subvariant and its descendants such as BQ.1 and BQ.1.1.

"Today we have additional evidence to show that these updated vaccines are protecting people against the latest COVID-19 variants," Dr. Brendan Jackson, head of the U.S. Centers for Disease Control and Prevention's COVID-19 response, told reporters in a briefing. Released last fall, the updated boosters target the BA.4 and BA.5 Omicron variants of the SARS-CoV-2 virus, which are no longer dominant. It showed that the updated vaccine helped prevent illness in roughly half of the people who had previously received two to four doses of the original COVID-19 vaccine, CDC said. The CDC said the updated vaccine worked similarly against BA.5-related infections and XBB/XBB.1.5-related infections. Given the findings, the CDC urged people to stay up to date on their recommended COVID-19 vaccines.

The updated Covid booster shot is proving to be effective at keeping people — especially older adults — out of the hospital, according to two new studies published Friday by the Centers for Disease Control and Prevention. Full coverage of the Covid-19 pandemicBoth studies looked at the impact the updated Covid booster shot has had since it was first recommended by the CDC on Sept. 1. Those who had received the updated booster were 84% less likely to be hospitalized with Covid, compared with people who had never had the Covid vaccine. The effectiveness was nearly identical — 83% — for people who had their last Covid shot more than a year ago. "There are 28 million people over the age of 65 that are eligible for this updated booster shot but haven’t gotten it," Link-Gelles said.

☆ Updated boosters add limited protection against Covid-19 illness, first real-world study shows
▼ + stars: | 2022-11-22 | by ( Brenda Goodman | ) edition.cnn.com time to read: +8 min

The new study found that the updated boosters work about like the original boosters. Compared with people who were unvaccinated, adults 18 to 49 who had gotten bivalent boosters were 43% less likely to get sick with a Covid-19 infection. The relative vaccine effectiveness showed the added protection people might expect on top of whatever protection they had left after previous vaccine doses. So overall, the updated boosters got them to around 50% effectiveness against symptomatic infection. According to CDC data, roughly two-thirds of Americans have completed at least their primary series of Covid-19 vaccines.

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