Norway announced on Monday the death by cerebral hemorrhage of a caregiver under the age of 50.
She had been hospitalized after being injected with a dose of AstraZeneca.
So far no link has been established between the vaccine and his death.
This is the second similar fatal case reported in a few days in the Nordic country which suspended Thursday "as a precaution" the vaccine developed by the Anglo-Swedish laboratory.
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On Saturday, Norwegian health authorities reported the hospitalization of three healthcare workers suffering from thrombocytopenia (abnormally low amount of blood platelets), bleeding and blood clots.
Two other caregivers hospitalized
Presented as relatively young, all had previously received a first injection of the AstraZeneca vaccine.
One of these three caregivers, a woman under 50 years old until then "in good health", died Sunday following a cerebral hemorrhage, indicated the health authorities.
She had been hospitalized Thursday, about a week after receiving the vaccine.
"We cannot rule out or confirm that this has something to do with the vaccine," Norwegian Medicines Agency official Steinar Madsen said at a press conference.
The state of health of the two other hospitalized caregivers was classified as stationary.
Another caregiver in her thirties had already died on Friday in Norway, ten days after receiving the same vaccine.
Other deaths have also been reported in Europe, notably in Austria and Denmark.
The European Medicines Agency (EMA) is investigating whether these cases are related to the vaccine.
Friday, the World Health Organization (WHO) had assured that there was "no reason not to use" it and the manufacturer was also reassuring.
According to Norwegian medical authorities, around 130,000 people have been administered the vaccine in the Nordic country, until the suspension announced Thursday due to fears of blood clots.
In Denmark, a letter to the vaccinated
In Denmark, the first country to have suspended its vaccination campaign with AstraZeneca on Thursday, the national drug authority on Monday sent a letter to some 100,000 people who have received an injection of the Anglo-Swedish vaccine in the last 14 days.
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The letter recommends that they be more vigilant in the face of symptoms such as abnormal bruises, bleeding from the skin or mucous membranes, severe headaches or stomach aches.