The decision was announced after the European Medicines Agency admitted that there may be a chance of a link between this vaccine and the formation of rare blood clots.

The vaccination of teachers and school employees scheduled for this weekend was postponed by a week. Graça Freitas, director-general of Health, also explained that, for the time being, it is necessary to "wait for better knowledge" to know whether, whoever has already taken a dose of AstraZeneca, should take the second or not.