Table 5.
Categories of infection location by the contact activities involved.
| Categories | Infection locations |
| Home | Within the family or in a relative's home |
| Public gathering | A large party held in a hotel or auditorium. |
| Public place | Shopping malls, hotels, hospitals, workplaces, and recreational facilities. |
| Public vehicle | Train, plane, taxi, bus, and other public transport. |
| Unknown | The location of the infection could not be identified. |