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Twitter Inc. has rolled back a policy that was aimed at tackling misinformation related to COVID-19 on the social media platform, lending itself to the risk of a potential surge in false claims even as cases rise in China and some parts of the world.

COVID-19 vaccine

Recent uptake of COVID-19 vaccine booster doses in the European Union has been “rather disappointing,” an official said on Thursday, amid concerns that protection against severe cases of the disease could weaken during the winter.

measles vaccine

There is now an imminent threat of measles spreading in various regions globally, as COVID-19 led to a steady decline in vaccination coverage and weakened surveillance of the disease, the World Health Organization (WHO) and the U.S. public health agency said on Wednesday.

nitrous oxide

The recreational use of nitrous oxide, also known as “laughing gas”, is on the rise in Europe among young people, producing worrying numbers of poisonings, the European Union drugs monitoring agency EMCDDA said in a study.

Philips logo

Philips, which has been struggling with a major recall of ventilators, on Monday flagged further problems with some machines it has previously replaced, according to an FDA statement.

The U.S. national public health agency said on Friday that Omicron subvariants BQ.1 and BQ.1.1 were estimated to account for about 44.2% of COVID-19 cases in the country for the week ending Nov. 12, compared with 32.6% in the previous week.

COVID-19 hospital

The risk of death, hospitalization and serious health issues from COVID-19 jumps significantly with reinfection compared with a first bout with the virus, regardless of vaccination status, a study published on Thursday suggests.

Sanofi said on Thursday it won European Union approval for its COVID-19 vaccine booster, jointly made with British partner GSK, after a drawn-out development effort that saw the pair fall behind now-dominant vaccine suppliers.

e-cigarettes

An estimated 3.08 million U.S. middle and high school students reported using a tobacco product in the last 30 days in 2022, down from 4.47 million in 2020 and 6.20 million in 2019, according to government data released on Thursday.

Pfizer logo

Pfizer Inc. and its partner BioNTech said on Thursday the EU health regulator has recommended authorizing the use of their bivalent COVID-19 shot as a booster in children aged 5 through 11.