Which of the following is NOT a direct mode of transmission in communicable diseases?

Correct option is D

Ans. (d)
Sol. Typhoid is NOT a direct mode of transmission in communicable diseases because it is primarily transmitted through contaminated food and water (fecal-oral route), making it an indirect mode of transmission. Direct transmission occurs through physical contact, droplets, or body fluids, whereas indirect transmission involves vectors, contaminated surfaces, or food.
Explanation of each option:
· (a) Direct Infection – Incorrect, as it refers to direct person-to-person transmission of pathogens.
· (b) Skin and eye infection – Incorrect, as infections can spread directly through contact with contaminated skin or bodily fluids.
· (c) Mucosa – Incorrect, as mucosal surfaces (eyes, nose, mouth) are common sites for direct transmission, especially in respiratory infections.
· (d) Typhoid – Correct answer. It spreads indirectly via contaminated food and water, not through direct contact.