http://www.who.int/entity/csr/disease/yellowfev/yfbooklet_en.pdf
It says about the return of yellow fever that had almost disappeared and the importance of vaccinating people to prevent them from this getting this disease. Document id pdf format; Acrobat Reader needed.
Originador(es): World Health Organization WHO
Recurso adicionado em:
21/01/2008
Idiomas disponíveis:
Inglês