RESUMO
Objective To finally diagnose the outbreak of acute respiratory infection caused by Adenovirus 3 in students of the north of Jiangsu province by serologic study. Methods An enzyme-linked immunosorbent assay (ELISA) has been used to detect the adenovirus IgM in the serum of acute phase and the adenovirus IgG in the serum of recovery phase. A neutralization test has been used to detect the neutralization antibody in the serum of acute and recovery phase from cases and in the serum from the control. The SPSS11.0 has been applied to the statistical analysis of the data. Results The positive rate of IgM, IgG and recovery phase neutralization antibody of cases are 3.7%, 44.4% and 59.5% respectively, while those of control are 0%, 8.3% and 33.3% respectively, and the P values of Chi-Square are 0.510, 0.018 and 0.226 respectively. The neutralization test of paired serum of 6 in 9 cases showed that the antibody titers was obviously increased. The concordance between IgG detected by ELISA and neutralization antibody detected by neutralization test is 61.4% and the P value of Kappa is 0.070. Conclusion By the serologic study, we can finally diagnose that the outbreak of acute respiratory infection was caused by Adenovirus 3.