Department of Virology, Faculty of Veterinary Medicine, Ondokuz Mayis University, 55270 Samsun, Turkey.
Department of Veterinary Experimental Animals, Faculty of Veterinary Medicine, Ondokuz Mayis University, 55270 Samsun, Turkey.
Trop Biomed. 2020 Mar 1;37(1):165-173.
This study was conducted in Samsun Province of Turkey to investigate the serological status of domesticated water buffaloes for both Crimean-Congo Hemorrhagic Fever (CCHF) and Lumpy Skin Disease (LSD). Serum was collected from a total of 272 water buffaloes from different age groups and both genders; of the total, 48.1% had been vaccinated against LSD with heterologous sheep-goat pox vaccine. The serum samples were individually assessed by using a commercial ID screen enzyme-linked immune-sorbent assay (ELISA) to detect neutralizing antibodies against both CCHF virus and LSD virus. All 272 buffaloes were negative for antibodies against the CCHF virus. All the unvaccinated buffaloes (141) were seronegative for LSD virus but of the 131 vaccinated buffaloes, 10 (7.6%) were seropositive for the LSD virus. In addition, 8.6% of vaccinated animals age >1 year old were seropositive for LSD, whereas the seropositivity was 5.1% for the animals age <= 1 year old. There was no significant difference for seropositivity between male and female animals in the >1 year old or <= 1 year old age groups. When seroprevalances for LSD in the tested water buffaloes are evaluated by gender, there was a significant difference between females (8.6%) and males (0%) in the <1 year old water buffaloes (X=20.24; P<0.001). Separately, the results of this study indicate that Bafra district water buffaloes are not infected by CCHFV and LSDV and some of the buffaloes that vaccinated with LSDV did not develop sufficient antibodies to protect them after they were vaccinated for the LSD virus. Furthermore, the authors of this study conclude that both the commercially produced vaccine that is currently administered and the vaccination strategy have to be urgently evaluated by the veterinary authorities in Turkey. This is essential in order to combat the spread of LSD virus infection with an effective vaccine and a comprehensive management strategy across Turkey.
本研究在土耳其的萨姆松省进行,旨在调查家养水牛对克里米亚-刚果出血热(CCHF)和牛结节性皮肤病(LSD)的血清学状况。从不同年龄组和性别采集了总共 272 头水牛的血清;其中,48.1%的水牛用异源绵羊-山羊痘疫苗接种了 LSD。使用商业 ID screen 酶联免疫吸附试验(ELISA)单独评估血清样本,以检测针对 CCHF 病毒和 LSD 病毒的中和抗体。所有 272 头水牛均对 CCHF 病毒抗体呈阴性。所有未接种 LSD 疫苗的水牛(141 头)均对 LSD 病毒血清呈阴性,但在 131 头接种 LSD 疫苗的水牛中,有 10 头(7.6%)血清呈 LSD 阳性。此外,1 岁以上接种动物的 LSD 血清阳性率为 8.6%,而 1 岁以下动物的血清阳性率为 5.1%。1 岁以上或 1 岁以下的雄性和雌性动物的 LSD 血清阳性率无显著差异。当按性别评估 LSD 在被检测水牛中的流行率时,在 1 岁以下的水牛中,雌性(8.6%)与雄性(0%)之间存在显著差异(X=20.24;P<0.001)。此外,本研究的结果表明,Bafra 区的水牛未感染 CCHFV 和 LSDV,并且一些接种 LSDV 的水牛在接种 LSD 病毒疫苗后并未产生足够的抗体来保护自己。此外,本研究的作者得出结论,土耳其兽医当局必须紧急评估目前使用的市售疫苗和接种策略。这对于在土耳其用有效的疫苗和全面的管理策略来对抗 LSD 病毒感染的传播至关重要。