Sofia Benharira, je bila stara 16 let i

BRASILIA, Sept 22 (Reuters) - The death of a 16-year-old who had a first dose of the Pfizer/BioNTech (PFE.N), vaccine against COVID-19 was due to a prior blood clot condition not related to the vaccine, Brazil's health regulator Anvisa said on Wednesday.

Concluding an investigation into the death earlier this month, Anvisa said it was caused by an auto-immune disease suffered by the adolescent. The Pfizer vaccine is the only one approved for minors in Brazil.

"It was a characteristic clinical picture of thrombotic thrombocytopenic purpura, an autoimmune disease," the regulator said in a statement.

Thrombotic thrombocytopenic purpura is a rare disorder that causes blood clots to form in small blood vessels throughout the body that can cause serious medical problems if they restrict blood flow to organs such as the brain, kidneys or heart.