vaccines+and+antibiotics



Infectious diseases could killed milions people in the world for 3 century ago, when the Black Death killed in 1347 and finished with half of Europe only in two years. Afther, (in 1918) the Spanish Flu killed finished aproximadly 75 milions fo people and the Variola with 500 milions in century XX, in the end of century IX, the biggest cause of death inthe ocident was because of turbeculosis. Many people thougth that the ancions were revered because many couldn't live afther aging. Now, the people can live afther the 70 years old. This invention is so importanto not only for me but, for the all people ini the world, because if it don't exist, we would have many diseases, and probably died.