Niczyporuk Jowita S, Kozdrun Wojciech, Czujkowska Agnieszka, Blanchard Yannick, Helle Mariteragi, Dheilly Nolwenn M, Gonzalez Gaelle
National Veterinary Research Institute Pulawy (NVRI), Department of Poultry Diseases, Al. Partyzantow 57, 24-100 Pulawy, Poland.
Rehabilitation Center for Protected National Birds "Bird Asylum", Av. Ratuszowa 1/3, 03-461 Warszawa, Poland.
Trop Med Infect Dis. 2023 Aug 16;8(8):417. doi: 10.3390/tropicalmed8080417.
The summer temperatures recorded in Poland in 2022 were among the highest in over 30 years and, combined with higher-than-expected rainfall, gave the impression of an almost tropical climate. Such climatic conditions were ideal for the transmission of vector-borne zoonotic diseases such as West Nile fever. In northeastern Poland, in the Mazowieckie region, the Polish event-based surveillance network reported increased fatalities of free-living hooded crows (. West Nile virus (WNV) lineage 2 was identified for the first time as the etiological agent responsible for the death of the birds. WNV was detected in 17 out of the 99 (17.17%) free-living birds tested in this study. All the WNV-infected dead birds were collected in the same area and were diagnosed in September by the NVRI and confirmed by the EURL for equine diseases, ANSES, in October 2022. Unnaturally high temperatures recorded in Poland in 2022 likely favored the infection and spread of the virus in the avian population. A nationwide alert and awareness raising of blood transfusion centers and hospitals was carried out to prevent human infections by WNV.
2022年波兰记录的夏季气温是30多年来最高的，再加上降雨量高于预期，给人一种几乎是热带气候的印象。这种气候条件非常适合西尼罗河热等媒介传播的人畜共患病的传播。在波兰东北部的马佐夫舍地区，波兰基于事件的监测网络报告称，自由生活的冠小嘴乌鸦死亡数量增加。西尼罗河病毒（WNV）2型首次被确定为导致这些鸟类死亡的病原体。在本研究中检测的99只自由生活鸟类中，有17只（17.17%）检测出WNV。所有感染WNV的死鸟都在同一地区收集，2022年9月由国家兽医研究所诊断，并于10月由法国农业食品环境与职业健康安全局（ANSES）的马病参考实验室（EURL）确认。2022年波兰异常高温可能有利于该病毒在鸟类群体中的感染和传播。为防止人类感染WNV，在全国范围内对输血中心和医院发出警报并提高了认识。
