What risk do calves under 1 month present to the public if allowed public contact?

What risk do calves under 1 month present to the public if allowed public contact?

• A. Cryptosporidiosis
• B. Salmonellosis
• C. Campylobacteriosis
• D. E. coli O157:H7 infection

Answer: (A)

Calves under one month shed large amounts of Cryptosporidium oocysts in their feces, and these tiny infectious particles are readily transmitted to people via the fecal-oral route. In settings where the public has direct contact with young calves—such as petting zoos or farm visits—the risk is high because hands, clothing, and the surrounding environment can become contaminated and then touched or ingested. Cryptosporidiosis typically causes watery diarrhea and can affect anyone, but it is especially concerning for children, the elderly, and immunocompromised individuals, who are more likely to experience symptoms. Other pathogens listed can be transmitted from cattle as well, but the scenario of very young calves with direct public contact most strongly aligns with Cryptosporidium transmission due to the age-related shedding and the parasite’s environmental resilience. Therefore, the risk most associated with calves under 1 month in this context is cryptosporidiosis.

Calves under one month shed large amounts of Cryptosporidium oocysts in their feces, and these tiny infectious particles are readily transmitted to people via the fecal-oral route. In settings where the public has direct contact with young calves—such as petting zoos or farm visits—the risk is high because hands, clothing, and the surrounding environment can become contaminated and then touched or ingested. Cryptosporidiosis typically causes watery diarrhea and can affect anyone, but it is especially concerning for children, the elderly, and immunocompromised individuals, who are more likely to experience symptoms.

Other pathogens listed can be transmitted from cattle as well, but the scenario of very young calves with direct public contact most strongly aligns with Cryptosporidium transmission due to the age-related shedding and the parasite’s environmental resilience. Therefore, the risk most associated with calves under 1 month in this context is cryptosporidiosis.