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World J Clin Cases. Apr 6, 2023; 11(10): 2168-2180
Published online Apr 6, 2023. doi: 10.12998/wjcc.v11.i10.2168
Table 1 Seropositive rates of severe acute respiratory distress syndrome coronavirus-2-specific immunoglobulin G and immunoglobulin M at various time points after symptom onset
Days after symptom onset
IgM positivity rate (%)
IgG positivity rate (%)
0–544/118 (37.3)71/118 (60.2)
6–1536/55 (65.5)44/55 (80.0)
16–2548/70 (68.6)56/70 (80.0)
26–3526/56 (46.4)2/56 (75.0)
36–9517/95 (17.9)56/95 (58.9)