Which of the following statements is correct ? 1. Common cold - Droplet Infection. 2. Typhoid - Contaminated food \& water. 3. AIDS - Shaking hands. 4. Ringworm - Using infected towels.

Common cold can take place from one person to other as it is a communicable in nature. A healthy person can get infected by being in close vicinity of infected person when he/she sneezes, coughs, as the droplets generated by sneeze and cough contain infecting agents. Typhoid occurs by the intake of contaminated water \& food. While ringworm is one of the skin disease which can transfer from one person to other by the use of infected towel \& handkerchief. AIDS (Acquired Immuno deficiency) does not occur or transfer by shaking hands.