Haroldo Vilhena

5 Flips | 1 Magazine | 2 Likes | 1 Follower | @HaroldoVilhena | Keep up with Haroldo Vilhena on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Haroldo Vilhena”

Vacinas fazem bem ou mal?

Há 204 anos, o inglês Edward Jenner descobriu a primeira vacina. Conseguiu, para surpresa geral, imunizar um garoto de 8 anos contra varíola …