Journal of infection and public health · 2025
Analysis of the metagenomic assembled genome of MERS-CoV and Alpha-CoV from Camelus dromedarius in Saudi Arabia.
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Hassan Ahmed M, Yasir Muhammad, Al-Subhi Tagreed, Sohrab Sayed Sartaj, Abbas Aymn T, El-Kafrawy Sherif A, Kumosani Taha, Azhar Esam I
Аннотация
BACKGROUND: Dromedary camels are known carriers of Middle East respiratory syndrome coronavirus (MERS-CoV). This study aimed to identify respiratory RNA viruses circulating in the nasal cavities of camels that could potentially cause disease in humans.
METHODS: Shotgun metagenomic paired-end sequencing was performed on four pools of nasal swabs collected from 40 camels originating from Sudan and Djibouti, using the MiSeq platform.
RESULTS: Alphacoronavirus 229E was commonly detected in the camel pools. MERS-CoV was found in both pools from Sudan and one from Djibouti. Camel parainfluenza virus 3 (PIV3) was detected in the male camel pool from Sudan. Furthermore, near-complete (99.9 %) metagenomic assembled genomes (MAGs) of alphacoronavirus 229E (SIAU MAG01) and MERS-CoV (SIAU MAG02) were retrieved from the female camel pool from Sudan. Another MAG of alphacoronavirus 229E (SIAU MAG03) was recovered from a male camel pool imported from Sudan. In the phylogenetic analysis, SIAU MAG02 clustered with MERS-CoV genome sequences retrieved from humans and camels in the Middle East. The alphacoronavirus 229E MAGs from camels formed a distinct clade separate from the human alphacoronavirus 229E lineage. SIAU MAG04 clustered with PIV3 sequences recovered from Camelus dromedarius in the United Arab Emirates.
CONCLUSIONS: Overall, respiratory viruses belonging to alpha and beta coronaviruses, notably MERS-CoV, recognized by the World Health Organization as an emerging infectious disease of critical concern, were observed in dromedary camels from African origins, potentially posing a risk of transmission to humans.
METHODS: Shotgun metagenomic paired-end sequencing was performed on four pools of nasal swabs collected from 40 camels originating from Sudan and Djibouti, using the MiSeq platform.
RESULTS: Alphacoronavirus 229E was commonly detected in the camel pools. MERS-CoV was found in both pools from Sudan and one from Djibouti. Camel parainfluenza virus 3 (PIV3) was detected in the male camel pool from Sudan. Furthermore, near-complete (99.9 %) metagenomic assembled genomes (MAGs) of alphacoronavirus 229E (SIAU MAG01) and MERS-CoV (SIAU MAG02) were retrieved from the female camel pool from Sudan. Another MAG of alphacoronavirus 229E (SIAU MAG03) was recovered from a male camel pool imported from Sudan. In the phylogenetic analysis, SIAU MAG02 clustered with MERS-CoV genome sequences retrieved from humans and camels in the Middle East. The alphacoronavirus 229E MAGs from camels formed a distinct clade separate from the human alphacoronavirus 229E lineage. SIAU MAG04 clustered with PIV3 sequences recovered from Camelus dromedarius in the United Arab Emirates.
CONCLUSIONS: Overall, respiratory viruses belonging to alpha and beta coronaviruses, notably MERS-CoV, recognized by the World Health Organization as an emerging infectious disease of critical concern, were observed in dromedary camels from African origins, potentially posing a risk of transmission to humans.