Table 2

Schedule of study visits and evaluations

Activity	Day 1: Screening and enrolment	Day 2*	Day 6*	Day 14†	Day 30 (phone)†	Unscheduled visit
Assess eligibility	✓
Obtain informed consent	✓
Assign participant identification number	✓
Collect/update locator information	✓	✓	✓	✓		✓
Collect sociodemographic information	✓
Collect information on environmental exposures	✓
Collect vaccination history	✓
Collect/update medical history	✓	✓	✓	✓	✓	✓
Assess for general and respiratory danger signs	✓	✓	✓	✓		✓
Respondent assessment of current symptoms	✓	✓	✓	✓	✓	✓
Clinician assessment of current symptoms	✓	✓	✓	✓		✓
Collect vital signs	✓	✓	✓	✓		✓
Perform targeted physical examination	✓	✓	✓	✓		✓
Collect/update concomitant medications/antibiotics	✓	✓	✓	✓	✓	✓
Collect/update hospitalisation log		✓	✓	✓	✓	✓
Perform chest X-ray	✓
Perform lung ultrasound	✓	✓	✓	✓		✓
Collect respiratory specimens	✓
Collect blood sample	✓
Refer to clinical care (as needed)	✓	✓	✓	✓	✓	✓
Schedule next visit	✓	✓	✓	✓
End of study questions					✓

*Window: +24 hours.
†Window: +/-72 hours days.