More than20 countrieshave either suspended or said they will delayOxford-AstraZenecavaccinations based on reports of deaths or injuries — in most cases related to blood clots — in healthy people who received the vaccine.

Prosecutors in Northern Italy announced Monday they had seized a batch of 393,600 shots of theAstraZeneca COVID vaccinefollowing the death of a 57-year-old man hours after he was vaccinated,reported Reuters.

Meanwhile the World Health Organization (WHO) is standing firm in its support of the vaccine. In apress conference today, WHO Director General Tedros Adhanom Ghebreyesus said, “This does not necessarily mean these events [deaths and injuries] are linked to the vaccine, but it’s routine practice to investigate them, and it shows that the surveillance system works and effective controls are in place.”

According tonews reports, WHO’s vaccine safety experts were meeting today to discuss the vaccine. WHOhad previously saidthat an ongoing analysis by its vaccines advisory committee has not established a causal link between the vaccine and blood clots and countries should keep using it,reported The Telegraph.

Regulators in Europe also defended the vaccinetelling news outletsthat the “benefits outweigh the risks.” Still, the European Medicines Agency (EMA) is investigating reports of blood clots in vaccine recipients and will release its findings Thursday,according to Nasdaq.com.

EMA Executive Director Emer Cookesaid todayduring a news conference that there was no indication the incidents, which she called “very rare,” had been caused by the vaccine, but experts were assessing that possibility.

The AstraZeneca vaccine, not yet approved for emergency use in the U.S., is being distributed under WHO’sCOVAXprogram,funded by Bill Gates. The companyplans to fileforEmergency Use Authorizationwith the U.S Food and Drug Administration in the upcoming weeks.

In Italy, Piedmont’s regional government suspended use of AstraZeneca’s batch ABV5811, which is different than the batch of AstraZeneca vaccine seized last week in Sicily after the suddendeaths of two menwho had recently been vaccinated.

The Italian government had previouslysaidthere was no evidence of a connection between the deaths and the vaccine, and had allowed the AstraZeneca vaccine to continue to be administered even after other countries had suspended use of the vaccine.

In addition to Italy,France,Iceland,Denmark,Cyprus,Luxembourg,Latvia,EstoniaandThe Netherlandshave suspended or delayed the AstraZeneca vaccine.

Other countries that have hit pause on AstraZeneca:

Norway, which isinvestigatingreports of young healthy people who experienced brain hemorrhages and blood clots after being vaccinated. On March 12, theNorwegian Medicines AgencyandNorwegian Institute of Public Health(NIPH) reported an unexpected death from a brain haemorrhage after an AstraZeneca vaccine was administered. A day later the agencies received three more reports of severe cases of blood clots or brain haemorrhages in younger people who had been vaccinated and were receiving hospital treatment. All of the patients showed reduced numbers of blood platelets.

Dr. Pal Andre Holme is treating the three health workers at Olso University Hospital. HetoldNorway’s VG newspaper that it was “very unusual” to see such young patients with such “low levels of blood platelets.” Holme’s said, “These are healthy young people who have not had any kind of disease before, who then get severe blood clots. You have to ask questions whether there is a connection with the vaccine, which I do not consider unlikely.”

In itsreport, the NIPH called for anyone under the age of 50 who experienced “large or small bruises” after being vaccinated to visit a doctor.