One person falls sick at home, and suddenly another family member develops the same symptoms. With H1N1 cases rising, close household contact can turn a single infection into a family-wide outbreak. H1N1, also known as swine flu, can spread through respiratory droplets, shared indoor air and frequently touched surfaces. So what can families do to break the chain of infection? NDTV’s Apurva Adhikari explains how families can reduce the risk of H1N1 spreading from one person to another.