Talking to reporters, the official with the Razi Vaccine and Serum Research Institute Ali Eshaqi said Iran produces the safest vaccine across the world.
Eshaqi stressed that the polio disease has been completely eradicated in Iran.
He underlined that during the past 16 years even one case of polio has not been traced in the country.
Polio (also known as poliomyelitis) is a highly contagious disease caused by a virus that attacks the nervous system. Children younger than 5 years old are more likely to contract the virus than any other group.
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