To determine how long antibodies against Middle East respiratory syndrome coronavirus persist, we measured long-term antibody responses among persons serologically positive or indeterminate after a 2012 outbreak in Jordan. Antibodies, including neutralizing antibodies, were detectable in 6 (86%) of 7 persons for at least 34 months after the outbreak.
Keywords: Jordan; MERS-CoV; Middle East respiratory syndrome; antibody; novel coronavirus; respiratory infections; serology; severe acute respiratory illness; viruses.