Table 1 Characteristics of studies describing clinical characteristics

Fields et al. (2021)

Salt Lake, (USA), March–May 2020

127

Shelters, unsheltered and encampment (houseless, roofless)

Obtained during contact tracing during interview or obtained by a shelter worker on the investigation form

Median = 48 (range = 4–89)^{^}

159 (94.1%)^{^}

Samuels et al. (2020)

Rhode Island, (USA), April 2020

35

Shelter only (houseless)

Reported by participants at the time of testing

18–39 = 9 (25%), 40–64 = 23 (66%), > 65 = 3 (9%)

26 (74%)

Imbert et al. (2020)

San Francisco (USA), March 29-April 11 2020

100

Shelter only (houseless)

Extracted from case interviews and isolation and quarantine hotel referral forms

Median = 54 years (range = 22–77)^

215 (84%)^

Kiran et al. (2021)

Toronto (Canada), April 1–July 31 2020

44

Shelter only (houseless)

During mobile outreach by interview. Only occurred when sufficient staff were available for outreach

Mean = 48.3 (sd = 18.0)^{^}

72 (92%)^{^}

Cha et al. (2021)

Several states (USA), 1 March-31 May, 2020

199

Hospitalizations only (unclear)

Upon admission

Median = 53 (range = 48–58)

165 (83.5% weighted)

Redditt et al. (2020)

Toronto (Canada), April 2020

24

Shelter only (houseless)

Any time during 14 days posttesting

Mean age = 38.7 (sd = 11.0)^{^}

22 (88%)^{^}

Baggett et al. (2020)

Boston (USA), 2 April-3 April, 2020

147

Shelter only (houseless)

Reported by participants at the time of testing

Mean = 53.1 (sd = 12.8)

124 (84%)

Ghinai et al. (2020)

Chicago, (USA), March 1-May 1 2020

406

Shelter only (houseless)

At date of specimen collection and in the following 2 weeks

 < 40 years = 80 (18.8%), 40–55 years = 32 (31.0%) and > 55 years = 214 (50.2%)^{^}

292 (69.5%)^{^}

McCormick et al. (2020)

Denver, (USA), May–July 2020

61

Shelters, unsheltered and encampment (houseless, roofless)

Reported by participants at the time of testing

Median = 47 (range = 36–56)

59 (97%)

Roland et al. (2021)

Brussels (Belgium), April 27–June 10, 2020

89

Shelter only (houseless)

Reported by participants at the time of testing

 < 40 years = 49 (62%) ≥ 40 years = 30 (38%)^{^}

62 (68.1%)^{^}

Gaeta et al. (2020)

Boston, USA

1

Shelter, followed by hospitalisation (houseless)

Reported by participants at the time of testing

N/A

Male- 100%

Tobolowsky et al. (2020)

Washington, USA

195 (shelter residents)

Shelter (houseless)

Symptom screening occurred after SARS-CoV-2 testing via 14 symptom screening events

The median age was 61 yeats (range = 50–73 years)

187 of 195 (96%) residents tested were men

Ghalamkarpour et al. (2020)

N/A

1

Hospitalisation, from shelter (houseless)

During admission to hospital

45

100%

Przydizial et al. (2020)

N/A

1

Hospitalisation from shelter (houseless)

During admission to hospital

51

100%

Byrnes et al. (2020)

N/A

2

Hospitalised (unclear)

Presented and was tested

36

100%

Prodanuk et al. (2021)

Canada

1

Hospitalised (houseless)

Presented and was tested

16

0%