Idézet:Emerging infectious diseases are newly identified or otherwise previously unknown infections that cause public health challenges. Re-emerging infectious diseases are due to both the reappearance of and an increase in the number of infections from a disease that is known, but which had formerly caused so few infections that it was no longer considered a public health problem. The factors that cause the emergence or re-emergence of a disease are diverse.

Idézet:? 1118393236.epub (Bisen, Prakash S.;Raghuvanshi, Ruchika (2013) (7.93 MB)