Most people survive<unk> , though in some cases, complications may occur. About 1 in 4 individuals will be hospitalized and 1–2 in 1000 will die. Complications are more likely in children under age 5 and adults over age 20. Pneumonia is the most common fatal complication of<unk>  infection and accounts for 56-86% of<unk> -related deaths. Possible consequences of<unk>  virus infection include laryngotracheobronchitis, sensorineural hearing loss, and—in about 1 in 10,000 to 1 in 300,000 cases—panencephalitis, which is usually fatal. Acute<unk>  encephalitis is another serious risk of<unk>  virus infection. It typically occurs two days to one week after the<unk>  rash breaks out and begins with very high fever, severe headache, convulsions and altered mentation. A person with<unk>  encephalitis may become comatose, and death or brain injury may occur. For people having had<unk> , it is rare to ever have a symptomatic reinfection. The<unk>  virus can deplete previously acquired immune memory by killing cells that make antibodies, and thus weakens the immune system which can cause deaths from other diseases. Suppression of the immune system by<unk>  lasts about two years and has been epidemiologically implicated in up to 90% of childhood deaths in third world countries, and historically may have caused rather more deaths in the United States, the UK and Denmark than were directly caused by<unk> . Although the<unk>  vaccine contains an attenuated strain, it does not deplete immune memory.
Measles
Zika fever
Mumps
Roseola
Ebola
Trichinosis
Smallpox
Scabies