While the epidemiology of Flaviviruses has been extensively studied in most of the Mediterranean basin, little is known about the current situation in Algeria. In order to detect the circulation of West Nile (WNV) and Usutu viruses (USUV) in Kabylia, 165 sera were collected from two wild birds species, namely the long distance migrant Turdus philomelos (song thrush) (n = 92) and the resident Passer domesticus (house sparrow) (n = 73). A total of 154 sera were first analyzed by commercial competition ELISA. WNV and USUV micro-neutralization tests were performed on all c-ELISA positive sera and all samples with poor volume. Overall, 7.8 % (CI95 %: 3.5-11.9) were positive by c-ELISA. Positive results were detected in 12.5 % (CI95 %:5.6-19.4) of song thrushes and 1.5 % (CI95 %: 0.0-4.5) for sparrow. Micro-neutralization tests revealed an overall seroprevalence of 6.7 % for WNV (CI95 %: 2.9-10.3), Neutralizing antibodies were found in 8.7 % (CI95 %: 3.0-14.4) for song thrushes and in 4.1 % (CI95 %: 0.0-8.7) of sparrows. The current study demonstrates significant seroprevalence of WNV antibodies in wild birds in Algeria.

中文翻译：

---

阿尔及利亚北部野生鸟类感染西尼罗河病毒的第一份血清学证据。

尽管在地中海大部分地区对黄病毒的流行病学进行了广泛的研究，但对阿尔及利亚的现状知之甚少。为了检测卡比利亚的西尼罗河（WNV）和Usutu病毒（USUV）的传播，从两种野生鸟类中收集了165种血清，分别是长距离迁徙的Turdus philomelos（鸣鹅）（n = 92）和居民过家蝇（麻雀）（n = 73）。首先通过商业竞争ELISA分析了总共154个血清。对所有c-ELISA阳性血清和所有体积较差的样品进行WNV和USUV微中和测试。总体而言，通过c-ELISA检测，阳性率为7.8％（CI95％：3.5-11.9）。在12.5％（CI95％：5.6-19.4）的鹅口疮和1.5％（CI95％：0.0-4.5）的鹅口疮中检测到阳性结果。微中和测试显示，WNV的总体血清阳性率为6.7％（CI95％：2.9-10.3），鹅口疮的中和抗体为8.7％（CI95％：3.0-14.4），4.1％（CI95％：0.0- 8.7）的麻雀。当前的研究表明在阿尔及利亚的野生鸟类中WNV抗体有明显的血清阳性率。