第03版，《世界卫生组织卫生紧急情况方案流行病学公报》，世界卫生组织东南亚区域办事处，2026年2月11日。报告期：2026年1月26日至2月9日

WHO Regional Office for South-East Asia3rdedition(2026),11February2026Reportingperiod:26Janto 8 Feb2026 Thisepidemiological bulletin aims to providethe situation of key infectiousdiseases intheWHOSouth-East AsiaRegionto inform risk assessmentsand responses. The bulletin usesinformation from publicly availablesources andwill be published every two weeks.Forfeedback or suggestions, please writetoseoutbreak@who.int. Key events and updates.......................................................................................................................2Bangladesh: Nipah virus infection..........................................................................................................................2WHO SEARO Webinar on Nipah virus infection in India.........................................................................................3New publication: Considerations for strengthening international information sharing for tracing and managinginfectious disease cases and contact persons: Interim guidance...........................................................................4Influenza..............................................................................................................................................5Situation in the WHO South-East Asia Region........................................................................................................5COVID-19.............................................................................................................................................7Situation in the WHO South-East Asia Region........................................................................................................7Mpox...................................................................................................................................................9Situation in the WHO South-East Asia Region........................................................................................................9Dengue..............................................................................................................................................11Situation in the WHO South-East Asia Region......................................................................................................11Bangladesh...........................................................................................................................................................12India.....................................................................................................................................................................13Maldives...............................................................................................................................................................15Nepal....................................................................................................................................................................15Sri Lanka...............................................................................................................................................................16Thailand................................................................................................................................................................17 Key events and updates Bangladesh:Nipah virusinfection Situation overview as of 4 February 2026•On 3 February 2026, theNationalIHRFocal Pointreported to WHO one confirmed case of Nipah Virus (NiV) infection in Naogaon District, Rajshahi Divison, northwestern Bangladesh.The patient isafemale,aged between40-50 years,residing in Naogaon District, Rajshahi Division. •On 21 January, she developed symptoms consistent with NiV infection, including fever, headache, musclecramps, loss of appetite (anorexia), weakness, and vomiting, followed by hypersalivation, disorientation, andconvulsion. On 27 January, she became unconscious and was referred by a local physician to a tertiary hospital.On 28 January,she was admitted and the Nipah surveillance team collected throat swabs and blood samples.The patient died the same day.On 29 January, NiV was confirmed throughPolymerase Chain Reaction (PCR)andEnzyme-Linked Immunosorbent Assay(ELISA) testing.•The case reported repeated consumption of raw date palm sap between 5 and 20 January 2026.•A total of 35 contact persons has been identified, including three household contact persons 14 communitycontact persons and 18 hospital contact persons. Samples were collected from six symptomatic contact persons,including three from household, two fromcommunities and one from hospital. All six samples tested negativefor NiV infection by PCR and anti-Nipah IgM antibody detection by ELISA.•As of 3 February, no additional cases have been identified. Contact persons are under monitoring.•Since the report of the first case in 2001,Bangladesh has documentedhuman infection of NiV almost everyyear,with348 NiV disease casesreported, inclu