Rare Vaccine-Derived Polio Discovered in Two Countries

According to the World Health Organization (WHO) cases of paralysis caused by mutation polio vaccine have been found in South Sudan and Madagascar and confirmed this week. In the article “Rare Vaccine-Derived Polio Discovered in 2 Countries”, by Donald G. McNeil Jr., it’s clear this information. Thus, I resolved to talk a little about the history of the creator's polio vaccine, because I'm doing a research paper about him.  In the century XX appeared a severe epidemic “poliomyelitis” through an infectious disease in the world. It mainly spread among the children that suffered with the paralysis. The polio is caused by a virus that lives in the throat and intestinal tract and transmitted through person-to-person contact. Thus, Jonas Salk, an American immunologist, had an idea to develop a polio vaccine. So, Jonas Salk was the greatest immunologist of the 20th century because he created the polio vaccine and eradicated the disease in the U.S. Besides, the oral polio vaccine was developed in 1961 by Albert Sabin, which it was the kind of vaccine that suffered mutation. Therefore, the both countries are looking for solutions through introduce injectable vaccine wherever it is safe and practical, also it contains a "killed" virus that cannot mutate.

References: <http://www.nytimes.com/2014/11/15/world/africa/rare-vaccine-derived-polio-discovered-in-2-countries.html>