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来自CDC网站，注意下表最后两行。

https://wwwnc.cdc.gov/eid/article/27/3/20-4543_article

 

 

Table 2

Positivity of antibodies to severe acute respiratory syndrome coronavirus 2 in 58 asymptomatic or mildly symptomatic patients at 8 mo after infection, South Korea*

Characteristic	Anti-N pan-Ig ECLIA, no. (%)†	Anti-N IgG ELISA, no. (%)‡	Anti-S IgG ELISA, no. (%)§	Anti-S1 IgG ELISA, no. (%)¶	sVNT, no. (%)#
Total	53/58 (91.4)	15/58 (25.9)	50/58 (86.2)	40/58 (69.0)	31/58 (53.4)
Sex
M	21/23 (91.3)	1/23 (4.3)	17/23 (73.9)	11/23 (47.8)	7/23 (30.4)
F	32/35 (91.4)	14/35 (40.0)**	33/35 (94.3)††	29/35 (82.9)**	24/35 (68.6)**
Age, y
<30	35/38 (92.1)	5/38 (13.2)	33/38 (86.8)	25/38 (65.8)	19/38 (50.0)
>30	18/20 (90.0)	10/20 (50.0)**	17/20 (85.0)	15/20 (75.0)	12/20 (60.0)
Duration of PCR positivity
<14 d	3/6 (50.0)	3/6 (50.0)	4/6 (66.7)	3/6 (50.0)	2/6 (33.3)
>14 d	48/50 (96.0)**	10/50 (20.0)	44/50 (88.0)	36/50 (72.0)	27/50 (54.0)
Disease severity
Asymptomatic	7/7 (100)	0/7 (0)	5/7 (71.4)	4/7 (57.1)	4/7 (57.1)
Mildly symptomatic	46/51 (90.2)	15/51 (29.4)	45/51 (88.2)	36/51 (70.6)	27/51 (52.9)

*Anti-N, antinucleocapsid; anti-S, antispike; anti-S1, antispike subunit; ECLIA, electrochemiluminescence immunoassay; pan-Ig, panimmunoglobulin; sVNT, surrogate virus neutralization test.?†Roche Diagnostics (https://diagnostics.roche.com). ?‡Epitope Diagnostics (https://www.epitopediagnostics.com).?§InBios International (https://www.inbios.com).?¶Euroimmun (https://www.euroimmune.com).?#GenScript (https://www.genscript.com).?**p<0.01.?††p<0.05.

 

 

Conclusions

we confirmed that rates of antibody positivity according to 3 commercial kits was still high at 8 months after infection, even in asymptomatic or mildly symptomatic participants (69.0%–91.4%).