Table 3.
Transmission setting of COVID-19 clusters
| Clusters | Cluster size | Total cases* | ||
|---|---|---|---|---|
| All clusters | 101 (100%) | 5·7 (2–36) | 386 (100%) | |
| Transmission setting | ||||
| Household | 76 (75%) | 2·6 (2–7) | 266 (69%) | |
| Occupational (non-health-care setting) | 14 (14%) | 4·3 (2–14) | 95 (25%) | |
| Occupational (health-care setting) | 6 (6%) | 4·2 (2–9) | 27 (7%) | |
| Community gathering | 11 (11%) | 14·2 (4–36) | 90 (23%) | |
| Transport | 9 (9%) | 3·3 (2–10) | 35 (9%) | |
| Close contacts† | 44 (44%) | 3·8 (2–26) | 157 (41%) | |
Data are n (%) or mean (range). A cluster was defined as two or more cases with an epidemiological link.
*
Total cases from among 1200 cases with information about age or sex that were associated with clusters and transmission settings. An additional 137 cases associated with the 101 clusters shown here were identified from among cases without information about age or sex and are included in cluster size counts.
†
Case narrative stated that cases in the cluster had close contact but did not provide additional information about transmission setting. Some clusters involving close contact might have occurred in the other transmission settings listed in this table.