近期，印度南部喀拉拉邦再次暴发尼帕病毒（Nipah virus）疫情，引发国内外高度关注。尼帕病毒是一种由果蝠传播的人畜共患病毒，1998年首次在马来西亚被发现，此后在孟加拉国、印度等地多次暴发。该病毒可通过直接接触感染动物（如果蝠、猪）的分泌物或食用被污染的食物（如生椰枣汁）传播给人类，人际传播也已被证实，尤其在密切接触者和医护人员中风险较高。感染者初期症状包括发热、头痛、肌肉疼痛、呕吐和喉咙痛，随后可能发展为脑炎、意识模糊甚至昏迷，致死率高达40%至75%。目前尚无特效药或疫苗，治疗主要依靠支持性护理。2023年喀拉拉邦的疫情已导致多人感染和死亡，当地政府迅速采取隔离、追踪接触者和关闭学校等措施以遏制扩散。专家指出，森林砍伐和城市扩张使人类与果蝠栖息地重叠加剧，增加了病毒溢出风险。加强监测、公众教育和跨部门协作是防控关键。世界卫生组织已将尼帕病毒列为优先研究病原体之一，呼吁加快疫苗和治疗药物研发。
Recently, an outbreak of Nipah virus has re-emerged in Kerala, southern India, drawing significant domestic and international attention. Nipah virus is a zoonotic pathogen primarily transmitted by fruit bats. First identified in Malaysia in 1998, it has since caused multiple outbreaks in Bangladesh and India. The virus can spread to humans through direct contact with infected animals (such as bats or pigs) or by consuming contaminated food—particularly raw date palm sap. Human-to-human transmission has also been confirmed, especially among close contacts and healthcare workers.Initial symptoms include fever, headache, muscle pain, vomiting, and sore throat, which can progress to encephalitis, confusion, and even coma. The case fatality rate ranges from 40% to 75%. There is currently no specific antiviral treatment or licensed vaccine; care remains supportive. In the 2023 Kerala outbreak, several infections and deaths have been reported, prompting authorities to swiftly implement measures such as isolation, contact tracing, and school closures to contain the spread.Experts warn that deforestation and urban expansion are increasing human encroachment into bat habitats, raising the risk of viral spillover. Enhanced surveillance, public awareness, and cross-sector collaboration are crucial for prevention. The World Health Organization has listed Nipah virus as a priority pathogen for research and development, urging accelerated efforts toward vaccines and therapeutics.
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