Table 2.
Underling comorbidities of participants at enrolment.
| Cardiovascular disease | 19 (55.9%) |
| Chronic lung disease | 4 (11.8%) |
| Cancer | 4 (11.8%) |
| Chronic kidney disease | 3 (8.8%) |
| Chronic liver disease | 7 (20.6%) |
| Immunosuppressed | 5 (14.7%) |
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