Cold or Flu

Abstract

Both colds and ‘flu are caused by viruses, of which the rhinoviruses, coronaviruses, and the respiratory syncytial virus are the most common culprits. Colds can be spread from person to person by direct contact. For example, virus particles in the mucoid material on the hand of a sick person can be transferred to the hand of a healthy person who may then introduce the virus into his eye or nose. Sneezes and coughs that contain secretions from the mouth and throat can also transmit cold viruses from person to person. Children are more susceptible to upper respiratory tract infections than adults.