麻豆影视

Skip to main content

Vaccination protects against COVID-19 more strongly than previous infection does, CDC study finds

Share

Vaccination protects people against coronavirus infection much better than previous infection does, a team of researchers led by the U.S. Centers for Disease Control and Prevention reported Friday.

They said should help settle debates over whether people who have been infected should bother getting vaccinated. They should, the researchers said.

People who had not been vaccinated and who ended up in the hospital were five times more likely to have COVID-19 than people who had been vaccinated within the past three to six months, they found.

"All eligible persons should be vaccinated against COVID-19 as soon as possible, including unvaccinated persons previously infected with SARS-CoV-2," the researchers wrote in the CDC's weekly report, the MMWR.

"We now have additional evidence that reaffirms the importance of COVID-19 vaccines, even if you have had prior infection," CDC Director Dr. Rochelle Walensky said in a statement.

"This study adds more to the body of knowledge demonstrating the protection of vaccines against severe disease from COVID-19. The best way to stop COVID-19, including the emergence of variants, is with widespread COVID-19 vaccination and with disease prevention actions such as mask wearing, washing hands often, physical distancing, and staying home when sick."

Researchers across the country collected data on 7,000 people treated at 187 hospitals in nine states for COVID-19-like illnesses between January and September. All were tested for coronavirus. Those who were not vaccinated were 5.49 times as likely to test positive for coronavirus as those who had been vaccinated within the past three to six months -- even if they had a recent COVID-19 infection.

The CDC noted that a Israeli study posted online in August found just the opposite -- but also noted that the Israeli study looked at people who had been vaccinated six month before or longer. "Understanding infection-induced and vaccine-induced immunity over time is important, particularly for future studies to consider," they wrote.

"In this study, the benefit of vaccination compared with infection without vaccination appeared to be higher for recipients of Moderna than Pfizer-BioNTech vaccine, which is consistent with a recent study that found higher vaccine effectiveness against COVID-19 hospitalizations for Moderna vaccine recipients than for Pfizer-BioNTech vaccine recipients," they added.

CTVNews.ca Top Stories

The sentencing of the man who pleaded guilty in the deadly hit-and-run in Kitsilano two years ago began on Friday.

The two people who died in a major fire in Old Montreal on Friday were a mother and her seven-year-old daughter, sources told Noovo Info.

Ontario Provincial Police have laid stunt charges against a driver caught speeding 75 km/h over the speed limit on Highway 417 in Ottawa's west end.

Canadian musician Jacob Hoggard has been found not guilty of sexually assaulting a young woman in northeastern Ontario eight years ago. The former Hedley frontman had pleaded not guilty to sexual assault.

Local Spotlight

Chantal Kreviazuk is set to return to Winnipeg to mark a major milestone in her illustrious musical career.

From the beaches of Cannes to the bustling streets of New York City, a new film by a trio of Manitoba directors has toured the international film festival circuit to much pomp and circumstance.

A husband and wife have been on the road trip of a lifetime and have decided to stop in Saskatchewan for the winter.

The grave of a previously unknown Canadian soldier has been identified as a man from Hayfield, Man. who fought in the First World War.

A group of classic car enthusiasts donated hundreds of blankets to nursing homes in Nova Scotia.

Moving into the second week of October, the eastern half of Canada can expect some brisker fall air to break down from the north

What does New Westminster's t蓹m蓹sew虛tx史 Aquatic and Community Centre have in common with a historic 68,000-seat stadium in Beijing, an NFL stadium and the aquatics venue for the Paris Olympics? They've all been named among the world's most beautiful sports venues for 2024.

The last living member of the legendary Vancouver Asahi baseball team, Kaye Kaminishi, died on Saturday, Sept. 28, surrounded by family. He was 102 years old.

New data from Greater Vancouver and the Fraser Valley shows a surge in supply and drop in demand in the region's historically hot real estate market.

Stay Connected