近日，印度南部喀拉拉邦再次暴发尼帕病毒（Nipah virus）疫情，引发全球关注。尼帕病毒是一种人畜共患病毒，最早于1999年在马来西亚被发现，主要通过果蝠（狐蝠）传播给人类，也可通过受污染的食物或密切接触感染者传播。该病毒致死率极高，据世界卫生组织（WHO）数据，历史上不同疫情中的致死率在40%至75%之间，远高于许多常见传染病。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。目前尚无特效药物或疫苗获批用于治疗或预防尼帕病毒感染，临床主要采取支持性治疗。此次印度疫情已导致多人感染，部分病例死亡，当地政府已启动应急响应机制，加强监测、隔离接触者并开展公众教育。专家提醒，避免接触蝙蝠栖息地、不饮用未经处理的椰枣汁（可能被蝙蝠污染）是重要的预防措施。由于尼帕病毒具有人际传播潜力和高致死率，被世卫组织列为优先研究的病原体之一，需持续警惕其潜在的大流行风险。
Recently, an outbreak of Nipah virus has re-emerged in Kerala, southern India, drawing global attention. Nipah virus is a zoonotic pathogen first identified in Malaysia in 1999. It primarily spreads to humans from fruit bats (flying foxes), and can also be transmitted via contaminated food or close contact with infected individuals. The virus is highly lethal—according to the World Health Organization (WHO), case fatality rates in past outbreaks have ranged from 40% to 75%, significantly higher than many common infectious diseases.Initial symptoms include fever, headache, muscle pain, vomiting, and sore throat, which may progress to encephalitis, confusion, and even coma. Currently, there are no approved antiviral drugs or vaccines specifically for Nipah virus; treatment remains supportive care.The current outbreak in India has resulted in multiple infections and several deaths. Local authorities have activated emergency response measures, including enhanced surveillance, contact tracing, quarantine, and public awareness campaigns. Experts advise avoiding bat habitats and refraining from consuming raw date palm sap—which may be contaminated by bat secretions—as key preventive steps. Due to its potential for human-to-human transmission and high fatality rate, Nipah virus is listed by WHO as a priority pathogen for research and development, warranting continued vigilance against its pandemic potential.
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