PT - JOURNAL ARTICLE AU - S C Wong AU - M H Ooi AU - M N L Wong AU - P H Tio AU - T Solomon AU - M J Cardosa TI - Late presentation of Nipah virus encephalitis and kinetics of the humoral immune response AID - 10.1136/jnnp.71.4.552 DP - 2001 Oct 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 552--554 VI - 71 IP - 4 4099 - http://jnnp.bmj.com/content/71/4/552.short 4100 - http://jnnp.bmj.com/content/71/4/552.full SO - J Neurol Neurosurg Psychiatry2001 Oct 01; 71 AB - Nipah virus is a newly discovered paramyxovirus transmitted directly from pigs to humans. During a large encephalitis outbreak in Malaysia and Singapore in 1998–9, most patients presented acutely. A 12 year old child is described who developed encephalitis 4 months after exposure to the virus. She was diagnosed by a new indirect IgG enzyme linked immunosorbent assay (ELISA), which is also described. The late presentation and IgG subclass responses had similarities to subacute sclerosing panencephalitis. Nipah virus should be considered in patients with encephalitis even months after their possible exposure.