First Case Report of Aspergillary Rhinopharyngitis in a Foal From Chile.

This research highlights the first recorded case of a fungal infection, specifically Aspergillus fumigatus, causing inflammation in the nasal, ocular, and ear mucosa of a purebred horse in Chile. The ailment was successfully treated with a 45-day course of the antifungal drug itraconazole.

Case details

In the outlined case, the affected animal was a purebred Chilean horse. The horse in question:

• Displayed a mucopurulent discharge from both nostrils, indicating an irritation or possible infection.
• Had inflammation of the nasal, ocular, and ear mucosa – these are linings in the nostrils, eyes, and ears. Inflammation typically indicates that the body is responding to a harmful agent.
• Exhibited decay and hyporexia. Decay, in medical terms, refers to the breaking down or degeneration of tissues. Hyporexia refers to a decrease in appetite. Both of these can be signs of illness in a horse.

Diagnosis & Treatment

The condition was identified as Aspergillus fumigatus rhinopharyngitis, which refers to inflammation in the nose and pharynx caused by the Aspergillus fumigatus fungus. This diagnosis was made based on:

• The horse’s clinical signs, which pointed to a possible infection.
• Analysis of a transtracheal aspirate sample. This is a test where a sample of fluid is taken from the trachea (windpipe), which can help identify organisms causing infection.
• Mycological analysis – a laboratory examination of the sample to find evidence of fungal organisms.
• Molecular analysis, which involves the examination of DNA from the sample case. This can help identify the specific species of fungus causing the infection.

Following the diagnosis, the horse was treated with oral itraconazole – a type of antifungal medication. The treatment was continued for 45 days, after which the horse showed no remaining clinical signs of the infection.

In conclusion, this study presents an exceptional case of fungal rhinopharyngitis in a horse, providing new insights into animal health and the impact of fungal diseases on horses.