Political polarization and online misinformation are threatening vaccination programs worldwide, with public trust volatile and varying widely between countries, according to a global vaccine confidence study.

Treating critically ill Covid-19 patients with corticosteroid drugs reduces the risk of death by 20 percent, an analysis of seven international trials found, prompting the World Health Organization to update its advice on treatment.

Several large U.S. states are not heeding new federal health officials’ calls to reduce Covid-19 testing of some exposed to the virus, joining a broad rebuke of the Trump administration by public health leaders.

A hospital in the southern French city of Lyon is testing patients with a new machine that enables them to breathe into a tube to see whether they have Covid-19 in a matter of seconds.

Paris-based Sanofi is reported to be considering cutting hundreds of jobs.

Paris-based Sanofi announced plans to increase the company’s vaccines research and production capabilities.

As AstraZeneca closes in on developing a vaccine against COVID-19, the U.K. pharma giant struck a deal with Europe’s Inclusive Vaccines Alliance to supply up to 400 million doses of the preventative medication by the end of 2020.

Cancer patients with COVID-19 who were treated with a drug combination promoted by U.S. President Donald Trump to counter the coronavirus were three times more likely to die within 30 days than those who got either drug alone, U.S. researchers reported.

France, Italy and Belgium acted to halt the use of hydroxychloroquine to treat patients suffering from COVID-19 amid questions about the safety of the generic anti-malaria drug.

A French consortium is stepping up previously announced plans for a saliva-based screening test to detect COVID-19, by joining up with medical laboratory and diagnostics group INOVIE.