Austrian authorities have suspended inoculations with a batch of AstraZeneca’s COVID-19 vaccine as a precaution following the death one person and the illness of another after being vaccinated.
One 49-year-old woman died as a result of severe coagulation disorders, while a 35-year-old woman developed a pulmonary embolism and is recovering, it said. A pulmonary embolism is an acute lung disease caused by a dislodged blood clot.
Austrian newspaper Niederoesterreichische Nachrichten as well as broadcaster ORF and the APA news agency reported that the women were both nurses who worked at the Zwettl clinic.
The Federal Office for Safety in Health Care (BASG) said blood clotting was not among the known side effects of the vaccine. It was pursuing its investigation vigorously to completely rule out any possible link.
“As a precautionary measure, the remaining stocks of the affected vaccine batch are no longer being issued or vaccinated,” it added.
An AstraZeneca spokesman said: “There have been no confirmed serious adverse events associated with the vaccine,” adding that all batches are subject to strict and rigorous quality controls.
Trials and real-world experience so far suggests the vaccine is safe and effective and it had been approved for use in well over 50 countries, he said.
AstraZeneca also said it was in contact with Austrian authorities and would fully support the investigation.
European Union regulators at the end of January approved the product, saying it was effective and safe to use, while the World Health Organization (WHO) in mid-February listed the product for emergency use.
Adverse reactions seen in trials were short-lived for the most part and blood clotting issues were not reported.
A safety assessment by Germany’s vaccine regulator of more than 360,000 people who received the Astra vaccine in the country between the launch in early February and Feb. 26 concluded that adverse reactions were in line with the safety profile described in clinical trials.
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