A Case of Human Thelaziasis and Review of Chinese Cases
ACTA PARASITOLOGICA(2020)
Abstract
Purpose Human cases of thelaziasis caused by Thelazia callipaeda have increased in China in recent years. Although this species is of medical importance, our knowledge about the epidemiology of thelaziasis is still fragmentary. This study first reports a case of thelaziasis in central China. Then, the epidemiology of thelaziasis in China in the past 100 years (1917–2018) is reviewed. Methods A 5-year-old girl experienced discomfort in her left eye. Four thread-like worms were seen in the nasal upper eyelid of the left eye. The symptoms disappeared after these parasites were removed. In addition, we reviewed studies of Chinese human thelaziasis cited in articles or book chapters in all languages from inception to 31 Dec 2019. Results China is the nation with the most reports of thelaziasis (653 cases) in the world. More human cases were reported in central and eastern China than in other areas, and the majority of cases were from rural areas in poor socioeconomic settings. Conclusion Special attention should be paid to this neglected disease in China. The use of a One Health approach is imperative for preventing eyeworm infections in humans.
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Key words
Thelaziasis, Thelazia callipaeda, Eye worm, Epidemiology, China
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