Journal
EMERGING MICROBES & INFECTIONS
Volume 8, Issue 1, Pages 1550-1552Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/22221751.2019.1682471
Keywords
Toxoplasma gondii; extra-intestinal cycle; tiger; isolation; public health
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Funding
- China Postdoctoral Science Foundation [2016M600577]
- Program for Science and Technology Innovation Talents in Universities of Henan Province [17HASTIT038]
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Toxoplasmosis is one of the most common zoonotic diseases in the world. Felines excrete environmentally resistant Toxoplasma gondii oocysts. However, there is no direct evidence to prove tigers are the intermediate host of T. gondii. Here, we show that, IgG antibodies to T. gondii in 80% (8/10) of captive tigers. Two viable T. gondii strains (ToxoDB genotype #9) were isolated by bioassay in mice using striated muscles of two tigers (Tiger#3 and Tiger#8). Additionally, mice were confirmed as T. gondii-positive by bioassay of feces #89?110, but no viable T. gondii strain was isolated successfully. The fecal samples from tigers may contain T. gondii oocysts. This is the first report of T. gondii isolation from tigers. These results provide direct evidence that an extra-intestinal cycle of T. gondii may develop in tigers.
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