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Volume 20, Number 4—April 2014

Research

Antibodies against MERS Coronavirus in Dromedary Camels, United Arab Emirates, 2003 and 2013

Benjamin Meyer, Marcel A. Müller, Victor M. Corman, Chantal B.E.M. Reusken, Daniel Ritz, Gert-Jan Godeke, Erik Lattwein, Stephan Kallies, Artem Siemens, Janko van Beek, Jan F. Drexler, Doreen Muth, Berend-Jan Bosch, Ulrich Wernery, Marion P.G. Koopmans, Renate Wernery, and Christian DrostenComments to Author 
Author affiliations: University of Bonn Medical Centre, Bonn, Germany (B. Meyer, M.A. Müller, V.M. Corman, D. Ritz, S. Kallies, A. Siemens, J.F. Drexler, D. Muth, C. Drosten); National Institute for Public Health and the Environment, Bilthoven, the Netherlands. (C.B.E.M. Reusken, G.-J. Godeke, J. van Beek, M.P.G. Koopmans); Erasmus Medical Centre, Rotterdam, the Netherlands (C.B.E.M. Reusken, J.F. Drexler, M.P.G. Koopmans); EUROIMMUN AG, Lübeck, Germany (E. Lattwein); Utrecht University, Utrecht, the Netherlands (B.-J. Bosch); Central Veterinary Research Laboratory, Dubai, United Arab Emirates (U. Wernery, R. Wernery)

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Table 2

MERS-CoV serologic results for dromedary serum and fecal samples, United Arab Emirates, 2003 and 2013*

Collection Year No. camels/ sex Camel age Feature No. samples Serum dilution, no. (%) positive
rIFA, MERS-S†
Neutralization test, MERS-CoV
80 <640 640–1,280 >1,280
1A 2013 2/M, F A, J Paired serum and fecal samples 177 175 (98.9) 24 (13.6) 74 (41.8) 79 (44.6)
1B 2013 2/M, F A, J Animals raised at CVRL 5 0 5 (100.0) 0 0
2 2013 2/M, F 2–8 y Racing camels 100 89 (89.0) 55 (55.0) 3 (3.0) 42 (42.0)
3 2013 2/M, F A Livestock camels‡ 218 217 (99.5) 23 (10.6) 13 (6.0) 182 (83.5)
4 2003 1/F A Systematically sampled 151 151 (100.0) 35 (23.2) 30 (19.9) 86 (57.0)
Total 651 632 (97.1) 142 (21.8) 120 (18.4) 389 (59.8)

*MERS-CoV, Middle East respiratory syndrome coronavirus; rIFA, recombinant immunofluorescence assay with MERS-CoV spike protein; MERS-S, spike protein from MERS-CoV; A, adult; J, juvenile; CVRL, Dubai Central Veterinary Research Laboratory.
†Fluorescence signal intensity was rated as negative, +, ++, +++, and ++++.
‡Originally purchased from Saudi Arabia, Sudan, Pakistan, and Oman.

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