id author title date pages extension mime words sentences flesch summary cache txt cord-324938-2lu9z5b2 Wu, Li-Ping Duration of Antibody Responses after Severe Acute Respiratory Syndrome 2007-10-17 .txt text/plain 1478 84 60 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. Both the OD readings (0.93) and positive percentages peaked at 90-120 days; however, the rate of reduction of the average OD readings was much faster, dropping by 22% (0.73) and 40% (0.54) at 1 and 2 years, respectively, after symptom onset (Figure 1) . Neutralizing antibodies in patients with severe acute respiratory syndrome-associated coronavirus infection Longitudinal profi le of immunoglobulin G (IgG), IgM, and IgA antibodies against the severe acute respiratory syndrome (SARS) coronavirus nucleocapsid protein in patients with pneumonia due to the SARS coronavirus Longitudinal analysis of severe acute respiratory syndrome (SARS) coronavirus-specifi c antibody in SARS patients ./cache/cord-324938-2lu9z5b2.txt ./txt/cord-324938-2lu9z5b2.txt