Which of the following conditions is least likely to cause severe diarrhoea in young children?

• A. Rotavirus infection
• B. Cholera infection
• C. Rubella infection
• D. Mumps infection

Answer: (C)

Rubella infection is least likely to cause severe diarrhoea in young children compared to the other options. Rubella, commonly known as German measles, primarily presents with symptoms such as a rash, fever, and mild respiratory issues. It is a viral infection that spreads through respiratory droplets and is known for causing congenital rubella syndrome when a woman is infected during pregnancy, but gastrointestinal symptoms like severe diarrhoea are not a primary feature of the illness.

In contrast, rotavirus infection is a leading cause of severe diarrhoea in young children, leading to dehydration and requiring medical attention. Cholera, although less common in developed regions, causes severe diarrhoea and dehydration due to the bacterium Vibrio cholerae, making it critical for healthcare providers to manage cases promptly. Mumps can also lead to complications, but it does not typically present with severe diarrhoea as a significant symptom. Thus, among the listed infections, rubella is the option associated with the least risk of causing severe diarrhoea in children.