alleryStart learning →Roughly what proportion of recently emerging human infectious diseases are zoonoses?
AAbout 25 percent of them
BAbout 45 percent of them
CAbout 95 percent of them
DAbout 75 percent of them
Answer & Solution
Correct answer: D. About 75 percent of them
1. An emerging disease is one appearing in a population for the first time or rising fast in incidence or range.
2. Approximately 75 percent of recently emerging human infectious diseases are zoonoses.
3. A zoonosis primarily infects animals and is transmitted to humans, and some are viral while others are bacterial.
4. Brucellosis is a prokaryotic zoonosis re-emerging in some regions.
5. Lower figures such as 25 or 45 percent understate how large the animal reservoir is.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 22 "Prokaryotes: Bacteria and Archaea", section 22.4 Bacterial Diseases in Humans_
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