Research Article
Efficacy and Safety of Lianhuaqingwen Capsules for the Prevention of Coronavirus Disease 2019: A Prospective Open-Label Controlled Trial
Table 4
Comparison of positive rates of subjects with different close contact statuses.
| Contact status | Positive rate | Nā=ā1976 | value | LH group | Control group |
| Close contact | N | 31 | 35 | 0.6762 | Positive, N (%) | 2 (6.45) | 4 (11.43) |
| Secondary close contact | N | 1070 | 840 | 0.0485 | Positive, N (%) | 1 (0.09) | 6 (0.71) |
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