Shingles is a contagious disease caused by the varicella virus. It is easily removed by air by infected people when they sneeze or cough. To date, there is no means of prevention except zoster vaccination against chickenpox. Research is also needed before extending its use to people aged over 50 years. Currently, it is recommended that nursing home staff had not had this disease. Very rarely, shingles can lead to pneumonia, hearing problems, blindness, scarring, brain inflammation (encephalitis) or death. For about one in five, the pain may continue even after the outbreak of fire, a condition called post-herpetic neuralgia (PHN). As older people, they are more likely to develop PHN, and it is more likely to be serious and lasting.