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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 1

Clinical ocular findings in patients with acute external ophthalmomyiasis caused by Oestrus ovis infection after sheep exposure during Eid al-Adha, Algeria, 2025. A–C) Representative external ocular photographs show acute conjunctivitis-like findings, including palpebral edema, conjunctival hyperemia, and mucous discharge. D, E) Slit-lamp examination images show motile larvae on the corneal surface and in the lower conjunctival fornix. F–I) Slit-lamp examination images show conjunctival inflammation, including conjunctival congestion, edema, and mucous discharge. Black arrow in panel E indicates the location of an O. ovis larva.

Figure 1. Clinical ocular findings in patients with acute external ophthalmomyiasis caused by Oestrus ovis infection after sheep exposure during Eid al-Adha, Algeria, 2025. A–C) Representative external ocular photographs show acute conjunctivitis-like findings, including palpebral edema, conjunctival hyperemia, and mucous discharge. D, E) Slit-lamp examination images show motile larvae on the corneal surface and in the lower conjunctival fornix. F–I) Slit-lamp examination images show conjunctival inflammation, including conjunctival congestion, edema, and mucous discharge. Black arrow in panel E indicates the location of an O. ovis larva.

Main Article

1These first authors contributed equally to this article.

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