Journal
EMERGING MICROBES & INFECTIONS
Volume 6, Issue -, Pages -Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1038/emi.2017.44
Keywords
camel; cohort; coronavirus; dromedary; immunity; MERS coronavirus; reinfection
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Funding
- US National Institute of Allergy and Infectious Diseases
- National Institutes of Health, Department of Health and Human Services [HHSN272201500006C]
- Health and Medical Research Fund
- Food and Health Bureau
- Government of the Hong Kong Special Administrative Region
- King Abdulaziz City for Science and Technology (KACST) through MERS-CoV is a part of the National Transformation Plan (NTP)
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Two herds of dromedary camels were longitudinally sampled with nasal and rectal swabs and serum, between September 2014 and May 2015, and the samples were tested for Middle East Respiratory Syndrome (MERS) coronavirus RNA and antibodies. Evidence of MERS-CoV infection was confirmed in one herd on the basis of detection of virus RNA in nasal swabs from three camels and significant increases in the antibody titers from three others. The three viruses were genetically identical, thus indicating introduction of a single virus into this herd. There was evidence of reinfection of camels that were previously seropositive, thus suggesting that prior infection does not provide complete immunity from reinfection, a finding that is relevant to camel vaccination strategies as a means to prevent zoonotic transmission.
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