Encephalitis lethargica is an atypical form of encephalitis. Infection usually mimics that of bacterial leptomeningitis, tuberculous meningitis, or viral encephalitis. Sabin also developed vaccines against other viral diseases, including encephalitis and dengue. The disease most often manifests as meningitis, encephalitis, or meningoencephalitis. The state is vulnerable to epidemics of malaria, diarrhea, Japanese encephalitis and meningitis. Prophylactic vaccination is available against poliomyelitis, measles, Japanese encephalitis, and rabies. These infections include, among others, various viruses (measles, varicella zoster encephalitis, rubella, enterovirus 71). These include hepatitis, febrile convulsions, and encephalitis. Herpes Simplex Virus Encephalitis (HSVE) is a neurological disorder which causes inflammation of the brain. However, smallpox and yellow fever vaccines increase the risk of infants developing vaccinia and encephalitis. Infection with Japanese encephalitis confers lifelong immunity. Contraindication to Pertussis immunization should be observed in patients with encephalitis. Some cases of limbic encephalitis are of autoimmune origin. Vulture droppings can also carry a range of diseases such as histoplasmosis, salmonella, and encephalitis. In November 1962, Dahl's daughter Olivia died of measles encephalitis, age seven.