Table 2. Traveler characteristics by time period in which P. falciparum infection was detected, Ontario, Canada*.
| Characteristic | Total, N = 243 | 2008–2009, n = 75 | 2013–2014, n = 79 | 2017–2018, n = 89 | p value |
|---|---|---|---|---|---|
| Age, y, mean (SD) † |
39.2 (18.3) |
40.9 (17.1) |
38.0 (16.6) |
38.9 (20.6) |
0.61 |
| Sex‡ | 0.47 | ||||
| F | 66 (27.1) | 18 (24.0) | 19 (24.0) | 29 (32.6) | |
| M | 169 (69.5) | 53 (70.7) | 57 (72.2) | 59 (66.3) | |
| Unknown |
8 (3.3) |
4 (5.3) |
3 (3.8) |
1 (1.1) |
|
| Parasitemia, %, median, (range)§ |
0.3 (<0.1–24.0) |
0.3 (<0.1–17.8) |
0.3 (<0.1–12.0) |
0.7 (<0.1–24.0) |
0.1 |
| Region of acquisition, no. (%)¶ | 0.14 | ||||
| West Africa | 81 (33.3) | 20 (26.7) | 17 (21.5) | 38 (42.7) | |
| Nigeria# | 40 (16.5) | 10 (13.3) | 8 (10.1) | 22 (24.7) | |
| East Africa | 18 (7.4) | 4 (5.3) | 8 (10.1) | 6 (6.7) | |
| Sudan** | 7 (2.9) | 1 (0.25) | 5 (6.3) | 1 (1.1) | |
| Africa, other | 3 (1.2) | 1 (1.3) | 1 (1.3) | 1 (1.1) | |
| Africa, not otherwise specified | 30 (12.3) | 11 (14.7) | 12 (15.2) | 7 (7.9) | |
| Caribbean, Dominican Republic | 1 (0.4) | 1 (1.3) | 0 | 0 | |
| Southeast Asia | 5 (2.1) | 0 | 4 (5.1) | 1 (1.1) | |
| South America: Guyana | 1 (0.4) | 0 | 0 | 1 (1.1) | |
| Unknown | 104 (42.8) | 33 (44) | 36 (45.6) | 35 (39.3) |
*Values are no. (%) except as indicated. †Age was missing for 4 patients in 2008–2009, 1 patient in 2013–2014, and 1 patient in 2017–2018. ‡Sex was missing for 4 patients in 2008–2009, 3 patients in 2013–2014, and 1 patient in 2017–2018. §Parasitemia was missing for 2 patients in 2008–2009. ¶West Africa: Congo, Burkina Faso, Cameroon, Ghana, Guinea, Ivory Coast, Liberia, Nigeria, Togo, Senegal, and Sierra Leone; East Africa: Burundi, Ethiopia, Kenya, Rwanda, Sudan, South Sudan, Tanzania and Uganda; Africa, other: Zambia, Libya, and South Africa; Africa not otherwise specified: travel to multiple regions in Africa, or specific destination within Africa not reported. #Top West Africa source country. **Top East Africa source country.