Microsporum canis infection in calves

Area of Science:

• Veterinary Dermatology
• Mycology
• Infectious Diseases

Background:

• Ringworm is a common fungal infection in animals.
• Microsporum canis is a frequent cause of dermatophytosis in cats and dogs.
• Infection with Microsporum canis is seldom reported in calves.

Purpose of the Study:

• To describe a rare case of Microsporum canis infection in calves.
• To document the clinical presentation and diagnostic findings of ringworm in young cattle.
• To provide insights into the pathogenesis and host-pathogen interactions of Microsporum canis in an unusual host.

Main Methods:

• Isolation and identification of the causative agent from skin scrapings.
• Microscopic examination of fungal elements.
• In vitro culture and characterization of the isolate.
• Experimental inoculation of guinea pigs to assess pathogenicity.

Main Results:

• Microsporum canis was successfully isolated from skin lesions on the heads of two naturally infected calves.
• In vitro studies confirmed the identity and growth characteristics of the isolate.
• Experimental infection in guinea pigs demonstrated the dermatophytic potential of the organism, causing characteristic lesions.

Conclusions:

• This report highlights the occurrence of Microsporum canis infection in calves, a seldom-reported condition.
• The findings underscore the importance of considering unusual pathogens in differential diagnoses for dermatophytosis in cattle.
• Further research may elucidate the epidemiology and risk factors associated with Microsporum canis in bovine populations.