Which genus of small gram-negative coccobacilli is associated mainly with animals but can infect humans?

Which genus of small gram-negative coccobacilli is associated mainly with animals but can infect humans?

• A. CAMPYLOBACTER
• B. Pseudomonas
• C. Actinobacillus
• D. Vibrio

Answer: (C)

The genus Actinobacillus is primarily associated with animals and is known to cause infections such as Actinobacillosis in livestock. While these bacteria mainly inhabit animals, they are also capable of infecting humans, particularly in cases where there is direct contact with infected animals or animal products. Actinobacillus species are recognized for their small, gram-negative coccobacilli appearance, which helps in their identification under the microscope. This genus includes species that can lead to conditions such as respiratory infections and soft tissue infections in humans, although these occurrences are relatively rare. Understanding the zoonotic potential of Actinobacillus highlights its relevance in veterinary microbiology and its potential impact on human health, especially among those who work closely with animals.

The genus Actinobacillus is primarily associated with animals and is known to cause infections such as Actinobacillosis in livestock. While these bacteria mainly inhabit animals, they are also capable of infecting humans, particularly in cases where there is direct contact with infected animals or animal products. Actinobacillus species are recognized for their small, gram-negative coccobacilli appearance, which helps in their identification under the microscope.

This genus includes species that can lead to conditions such as respiratory infections and soft tissue infections in humans, although these occurrences are relatively rare. Understanding the zoonotic potential of Actinobacillus highlights its relevance in veterinary microbiology and its potential impact on human health, especially among those who work closely with animals.