Last year, the Basque Country Pharmacovigilance Unit reported 2,001 suspected adverse reactions, with the most frequent being related to COVID-19 vaccines.

The Basque Country Pharmacovigilance Unit notified 6,748 pharmaceutical products last year, of which 2,001 have been considered suspected of being associated with various reactions. Of these, the most frequent active principles were related for the second consecutive year to the sera against the coronavirus, specifically the Moderna and Pfizer vaccines, both the monovalent, that is, the compound used in the first booster injection, and the bivalent. , the second booster injection against Covid-19. Side effects have also been reported after taking tramadol, a painkiller that acts on the central nervous system; iomeprol, used to improve the visualization of different body areas by means of certain radiological techniques; metamizole, a drug for the treatment of postoperative or post-traumatic moderate or severe acute pain; and even amoxicillin.

The 1,859 people who informed Osakidetza of a problem after coming into contact with a medication reported a total of 3,600 adverse reactions, taking into account that an individual can manifest more than one event. The most common, however, developed feverish disorders, fatigue, nausea and vomiting, headaches, diarrhea and muscle pain.

The yearbook prepared by the UFVPV also includes episodes of people with reactions in the vaccination area and even neurological symptoms and signs.