Serological evidence of MERS-CoV and HKU8-related CoV co-infection in Kenyan camels

Autor: Wei Zhang, Xiao-Shuang Zheng, Bernard Agwanda, Sheila Ommeh, Kai Zhao, Jacqueline Lichoti, Ning Wang, Jing Chen, Bei Li, Xing-Lou Yang, Shailendra Mani, Kisa-Juma Ngeiywa, Yan Zhu, Ben Hu, Samson Omondi Onyuok, Bing Yan, Danielle E. Anderson, Lin-Fa Wang, Peng Zhou, Zheng-Li Shi
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Emerging Microbes and Infections, Vol 8, Iss 1, Pp 1528-1534 (2019)
Druh dokumentu: article
ISSN: 22221751
2222-1751
DOI: 10.1080/22221751.2019.1679610
Popis: ABSTRACTDromedary camels are important reservoir hosts of various coronaviruses, including Middle East respiratory syndrome coronavirus (MERS-CoV) that cause human infections. CoV genomes regularly undergo recombination during infection as observed in bat SARS-related CoVs. Here we report for the first time that only a small proportion of MERS-CoV receptor-binding domain positive (RBD) of spike protein positive camel sera in Kenya were also seropositive to MERS-CoV nucleocapsid (NP). In contrast, many of them contain antibodies against bat HKU8-related (HKU8r)-CoVs. Among 584 camel samples that were positive against MERS-CoV RBD, we found only 0.48 (8.22%) samples were also positive for NP. Furthermore, we found bat HKU8r-CoV NP antibody in 73 (12.5%) of the MERS-CoV RBD positive and NP negative samples, yet found only 3 (0.43%) of the HKU8r-CoV S1 antibody in the same samples. These findings may indicate co-infection with MERS-CoV and a HKU8r-CoV in camels. It may also raise the possibility of the circulation of a recombinant coronavirus virus with the spike of MERS-CoV and the NP of a HKU8r-CoV in Kenya. We failed to find molecular evidence of an HKU8r-CoV or a putative recombinant virus. Our findings should alert other investigators to look for molecular evidence of HKU8r-CoV or recombinants.
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