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Volume 32, Number 7—July 2026

Research Letter

Ophthalmomyiasis Outbreak Caused by Oestrus ovis Infection, Algeria, 2025

Yuyang Zeng1, Hongkuan Yang1, Xin Li, Hongzheng Yang, and Yunyun ZhouComments to Author 

Author affiliation: Spencer Center for Vision Research Department of Ophthalmology, Byers Eye Institute at Stanford University School of Medicine, Palo Alto, California, USA (Y. Zeng); Renmin Hospital of Wuhan University Department of Ophthalmology, Wuhan, China (Y. Zeng, Y. Zhou); Tongji Hospital of Huazhong University of Science and Technology Department of Neurosurgery, Wuhan (Hongkuan Yang); Hubei Cancer Hospital of Huazhong University of Science and Technology Department of Anesthesiology, Wuhan (X. Li); Renhe Hospital Affiliated with China Three Gorges University Department of Medical Cosmetology, Yichang, China (Hongzheng Yang)

Main Article

Figure 2

Morphologic identification of Oestrus ovis larvae extracted from patients with acute external ophthalmomyiasis after sheep exposure during Eid al-Adha, Algeria, 2025. A, B) Extracted first-instar larva from the ocular surface is shown grossly. C–E) Microscopic examination demonstrates characteristic features of O. ovis, including prominent oral hooks connected to the internal cephalopharyngeal skeleton and multiple rows of spiny projections. Original magnification ×40 (panel C), ×10 (panel D), and ×100 (panel E).

Figure 2. Morphologic identification of Oestrus ovis larvae extracted from patients with acute external ophthalmomyiasis after sheep exposure during Eid al-Adha, Algeria, 2025. A, B) Extracted first-instar larva from the ocular surface is shown grossly. C–E) Microscopic examination demonstrates characteristic features of O. ovis, including prominent oral hooks connected to the internal cephalopharyngeal skeleton and multiple rows of spiny projections. Original magnification ×40 (panel C), ×10 (panel D), and ×100 (panel E).

Main Article

1These first authors contributed equally to this article.

Page created: May 28, 2026
Page updated: June 26, 2026
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