Chances of worldwide plagues increasing, scientists say.
D000818:Animals; D003141:Communicable Diseases / Q000453:epidemiology*; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D004197:Disease Reservoirs; D004199:Disease Vectors; D004352:Drug Resistance, Microbial; D004782:Environmental Health; D006801:Humans; D011158:Population Growth; D014504:Urban Health