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9 December 2019 High Prevalence of Cryptococcus neoformans and Isolation of Other Opportunistic Fungi From Pigeon (Columba livia) Droppings in Northeast Iran
Zahra Ghaderi, Samaneh Eidi, Jamshid Razmyar
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Abstract

Cryptococcus neoformans is an opportunistic human pathogen that causes cryptococcosis, a life-threatening infection that usually manifests as meningoencephalitis in immunocompromised patients. Pigeon (Columba livia) droppings can spread pathogenic yeasts and mold fungi, such as C neoformans, in the environment. The objective of this study was to isolate C neoformans and other opportunistic fungi from feral pigeon droppings. One hundred twenty samples of feral pigeon droppings were suspended 1:10 in saline solution and then cultured. The fungi were identified by standard mycological techniques. Fungal contamination was detected in all examined samples. Yeast and mold fungi were isolated from 114 samples (95%) and 103 samples (85.8%), respectively, out of 120 samples. The highest frequency of yeast and mold fungi isolated from collected samples was C neoformans 77.5% and Rhizopus species 38.3%, respectively. Several types of fungi exist in pigeon droppings that can be spread in the environment and transmitted to children and elderly, as well as immunocompromised patients who are at increased risk of contracting opportunistic diseases.

© 2019 by the Association of Avian Veterinarians
Zahra Ghaderi, Samaneh Eidi, and Jamshid Razmyar "High Prevalence of Cryptococcus neoformans and Isolation of Other Opportunistic Fungi From Pigeon (Columba livia) Droppings in Northeast Iran," Journal of Avian Medicine and Surgery 33(4), 335-339, (9 December 2019). https://doi.org/10.1647/2018-370
Published: 9 December 2019
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KEYWORDS
Avian
Columba livia
Cryptococcus neoformans
immunocompromised patients
opportunistic fungi
pigeon
pigeon droppings
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