Confirmed cases of COVID-19
36 individuals were confirmed to have COVID-19, and these people were related to three local clusters, referred to as A (containing 11 people), B (consisting of 20 individuals), and C (comprising five people; figure 1 ). Of these affected individuals, 17 tested positive for SARS-CoV-2 in Singapore, of whom only two (both from cluster C) had recent travel history to China 14 days before onset of symptoms (table ). Two people from cluster A and 17 from cluster B were reported by the health authorities of countries where they resided or travelled to.
Figure 1 Timing of events and cases in three clusters of COVID-19 in Singapore
Age and sex are shown for each case (left panels), with other pertinent information (eg, relationship or nationality). Timeline of events (right panels); onset dates of symptomatic cases are shown, when available. COVID-19=coronavirus disease 2019.
Table Demographic, clinical, and radiological characteristics of individuals who tested positive for SARS-CoV-2 in Singapore
Individuals (n=17)
Age (years) 40 (36–51)
Gender
Male 7 (41%)
Female 10 (59%)
Ethnic origin
Chinese 16 (94%)
Other 1 (6%)
Nationality
Singaporean 13 (76%)
Chinese 3 (18%)
Indonesian 1 (6%)
Cluster
A (tourist group from China and shopworkers) 9 (53%)
B (company conference) 3 (18%)
C (church) 5 (29%)
Chronic illness
Yes* 3 (18%)
No 14 (82%)
Travel to China in past 14 days
Yes 2 (12%)
No 15 (88%)
Symptoms
Fever 15 (88%)
Cough 14 (82%)
Sore throat 8 (47%)
Shortness of breath 6 (35%)
Myalgia 5 (29%)
Diarrhoea 4 (24%)
Chest pain 3 (18%)
Runny nose 1 (6%)
Nausea or vomiting 1 (6%)
Chest radiography findings on admission†
Present 8 (53%)
Absent 7 (47%)
Interval between symptom onset and hospitalisation (days) 4 (3–9)
Data are median (IQR) or n (%). SARS-CoV-2=severe acute respiratory syndrome coronavirus 2.
* Allergic rhinitis (n=1), hypertension (n=1), and cervical spondylosis (n=1).
† Data available for 15 individuals.