SARS-specific antibodies were maintained for an average of 2 years. - GreenMedInfo Summary
Duration of antibody responses after severe acute respiratory syndrome.
Emerg Infect Dis. 2007 Oct ;13(10):1562-4. PMID: 18258008
Li-Ping Wu
Among 176 patients who had had severe acute respiratory syndrome (SARS), SARS-specific antibodies were maintained for an average of 2 years, and significant reduction of immunoglobulin G-positive percentage and titers occurred in the third year. Thus, SARS patients might be susceptible to reinfection>or=3 years after initial exposure.