Typhoid, also known as typhoid fever, is a bacterial infection caused by the bacterium Salmonella enterica serotype.

Adenovirus belongs to the DNA virus family and is known for its ability to replicate within host cells, causing various infections. Commonly associated with respiratory and eye infections, adenovirus comes in many types, with adenovirus type 2 and type 5 being prevalent. In severe cases, adenovirus infections can lead to pneumonia or other serious complications.

Rotavirus is a highly contagious virus that primarily affects infants and young children, causing severe diarrhea and vomiting. It spreads through contact with contaminated feces, surfaces, or objects, and can lead to dehydration and other complications, particularly in young children. Vaccination is available to prevent rotavirus infections.