{"id":12015,"date":"2026-05-13T20:47:25","date_gmt":"2026-05-14T01:47:25","guid":{"rendered":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/?p=12015"},"modified":"2026-05-13T20:48:28","modified_gmt":"2026-05-14T01:48:28","slug":"the-outbreak-in-argentina-in-2018-19-of-hantavirus-is-one-that-scientists-studied-carefully-so-many-researchers-are-turning-to-it-for-information-about-the-virus","status":"publish","type":"post","link":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/2026\/05\/13\/the-outbreak-in-argentina-in-2018-19-of-hantavirus-is-one-that-scientists-studied-carefully-so-many-researchers-are-turning-to-it-for-information-about-the-virus\/","title":{"rendered":"The outbreak in Argentina in 2018-19 of hantavirus is one that scientists studied carefully, so many researchers are turning to it for information about the virus."},"content":{"rendered":"
\n

Nature<\/a> Recurrent Nipah virus infections in India reveal two distinct epidemiological patterns despite a shared bat reservoir. In Kerala, frequent spillover rarely progresses beyond small clusters due to surveillance and one health approaches, while in West Bengal, limited events have enabled healthcare-associated transmission, and enhanced surveillance has detected the recent 2026 outbreak. This contrast underscores the roles of ecological exposure and the health system response in shaping outbreaks and highlights that large-scale transmission can often be prevented.<\/p>\n\n\n\n

Introduction<\/h2>\n\n\n\n

Nipah virus (NiV), a highly infectious human pathogen, is primarily maintained in Pteropus<\/em> bats. The virus was initially identified in a large outbreak in Malaysia in 1998\u201319991<\/a><\/sup>. Since then, it has caused repeated spillover events in South and Southeast Asia, with high case fatality rates and lacks effective treatment options2<\/a><\/sup>. The history of the Nipah virus disease in India is unique: although its bat reservoir is widely distributed across the country, human cases have only been reported repeatedly in two states, namely, West Bengal in Eastern India and Kerala in the southwest coast3<\/a>,4<\/a>,5<\/a>,6<\/a>,7<\/a>,8<\/a>,9<\/a>,10<\/a><\/sup>. These two geographies are very different in terms of ecology, demography, health system capacity and human environment interface, but both have observed Nipah spillover recurrence. Outbreaks were reported in West Bengal in 2001 and 2007, epidemiologically associated with Bangladesh3<\/a>,4<\/a><\/sup>, and again in 2026, when two healthcare workers in Barasat, North 24 Parganas district were laboratory-confirmed for Nipah virus infection11<\/a><\/sup>. Kerala, on the other hand, has had recurring spill-over events since 2018, with outbreaks in 2019, 2021, 2023, 2024, and 2025, and has frequently been limited to single cases or small outbreaks with quick containment5<\/a>,6<\/a>,7<\/a>,8<\/a>,9<\/a>,10<\/a><\/sup>. This commentary argues that recurrent Nipah virus spill over in India is best understood not as a uniform virological phenomenon, but as the outcome of distinct ecological interfaces interacting with bat reservoir dynamics, human exposure patterns, and health system preparedness.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Nature Recurrent Nipah virus infections in India reveal two distinct epidemiological patterns despite a shared bat reservoir. In Kerala, frequent spillover rarely progresses beyond small clusters due to surveillance and one health approaches, while in West Bengal, limited events have enabled healthcare-associated transmission, and enhanced surveillance has detected the recent 2026 outbreak. This contrast underscores […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[74,72,54,16],"tags":[],"class_list":["post-12015","post","type-post","status-publish","format-standard","hentry","category-hantavirus","category-haunta-virus","category-nipah","category-published-research"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/posts\/12015","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/comments?post=12015"}],"version-history":[{"count":1,"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/posts\/12015\/revisions"}],"predecessor-version":[{"id":12016,"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/posts\/12015\/revisions\/12016"}],"wp:attachment":[{"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/media?parent=12015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/categories?post=12015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.unmc.edu\/healthsecurity\/transmission\/wp-json\/wp\/v2\/tags?post=12015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}