Data was withheld from World Health Organization investigators who travelled to China to research the origins of the coronavirus epidemic, WHO Director-General Tedros Adhanom Ghebreyesus said on March 30.

Britain on March 22 demanded the European Union allow the delivery of Covid-19 vaccines the country has ordered as tensions over a possible export ban on EU-manufactured shots mounted and Brussels pointed an accusing finger at drugmaker AstraZeneca.

AstraZeneca Plc said on March 14 a review of safety data of people vaccinated with the company’s Covid-19 vaccine has shown no evidence of an increased risk of blood clots.

Johnson & Johnson told the European Union the company is facing supply issues that may complicate plans to deliver 55 million doses of J&J’s Covid-19 vaccine to the bloc in the second quarter of 2021, an EU official told Reuters.

Russia’s Sputnik V could be produced in western Europe for the first time after a deal to make the Covid-19 vaccine in Italy was signed by the RDIF sovereign wealth fund and Swiss-based pharmaceutical company Adienne.

The World Health Organization listed AstraZeneca’s Covid-19 vaccine for emergency use, widening access in the developing world, while sources said the EU is in talks with Moderna on buying more vaccines.

AstraZeneca denied the company’s Covid-19 vaccine is not very effective for people over 65 years old, after German media reports said officials fear the vaccine may not be approved in the European Union for use in the elderly.

Pfizer slashed in half the volume of Covid-19 vaccines the company will deliver to some EU countries this week, government officials said, as frustration over the U.S. drugmaker’s unexpected cut in supplies grows.

AstraZeneca Plc’s cancer drug Imfinzi was approved in Europe and Britain for a spaced-out regimen in a common type of lung cancer to help reduce the frequency of hospital visits while continuing treatment.

U.S. firm Johnson & Johnson is likely to apply for EU approval for the company’s Covid-19 vaccine candidate in February, a top lawmaker said.