How to prevent spread of chest infection
If couging better avoid visiting crowded places
Avoid going to work if having cold,fever.
Never board a bus/taxi,if driver coughing.
Put a tissue paper/handkerchief on mouth if coughing
Before hiring a domestic help in house,get a xray chest done and sputum for AFB examined and physician examination.
Avoid living in crowded places having less light/freshair