Table 1 Demographic and epidemiological characteristics

Sex

0.028

 Male

17 (48.6)

32 (72.7)

 Female

18 (51.4)

12 (27.3)

Age, median years (IQR)

35 (23.0–53.0)

38.5 (22.2–52.7)

0.529

Ethnicity

0.017

 African

26 (74.3)

21 (47.7)

 Caucasian

9 (25.7)

23 (52.3)

Type of patient

0.034

 Early immigrant

11 (31.4)

4 (9.0)

 Visiting friends and relatives

14 (40.0)

17 (38.6)

 VFR traveller

1 (2.9)

 Tourism

3 (6.8)

 Work/cooperation

7 (20.0)

17 (38.6)

 Expatriate, long-term stay

2 (5.7)

3 (6.8)

Country of infection

0.097

 Equatorial Guinea

14 (40.0)

11 (25.0)

 Nigeria

5 (14.3)

6 (13.6)

 Cameroon

1 (2.9)

11 (25.0)

 Togo

1 (2.9)

1 (2.3)

 Liberia

2 (5.7)

 Tanzania

1 (2.3)

 Guinea-Conakry

1 (2.9)

1 (2.3)

 Ivory Coast

3 (8.6)

2 (4.5)

 Mozambique

1 (2.9)

2 (4.5)

 Congo

1 (2.9)

1 (2.3)

 Congo Democratic Republic

1 (2.3)

 Uganda

2 (5.7)

 Chad

2 (4.5)

 Ghana

1 (2.9)

1 (2.3)

 Sierra Leone

1 (2.3)

 Sudan

1 (2.9)

 Burundi

1 (2.9)

 Angola

1 (2.3)

 Mali

1 (2.3)

 Guinea-Bissau

1 (2.3)

 Madagascar

1 (2.9)

Duration of travel, median days (IQR)

101 (21.0–240.0)

38.5 (26.7–157.5)

0.547

Chemoprophylaxis

0.078

 No prophylaxis

14 (60.8)

24 (60.0)

 Incomplete

5 (21.7)

2 (5.0)

 Complete

4 (17.4)

14 (35.0)

Time from arrival to onset of symptoms, median days (IQR)

34.0 (13.0–181.25)

30.5 (10.0–86.25)

0.171

Time from onset of symptoms to diagnoses, median days (IQR)

3 (0.0–10.0)

3.5 (0.7–8.0)

0.772

Recent Plasmodium infection

16 (51.6)

15 (40.5)

0.361

Other underlying conditions

1

 G6PDH deficit

1/30 (3.3)

2/37 (5.4)

 Diabetes mellitus

1 (2.9)

4 (9.0)

0.3756

 Drepanocytosis

1 (2.9)

1 (2.3)

 Pregnancy

1 (2.9)

0

 Chronic kidney disease

0

1 (2.3)

 Splenectomy

1 (2.9)

0

 Hepatitis B virus

0

3 (6.8)

 Hepatitis C virus

1 (2.9)

0

 HIV

3 (8.6)

1 (2.3)