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Table 1 Characteristics of travellers with malaria reported to GeoSentinel, January 2003–June 2016

From: Malaria after international travel: a GeoSentinel analysis, 2003–2016

Characteristic All travellers (n = 5689) No species diagnosis (n = 443) P. falciparum (n = 4011) P. vivax (n = 857) P. ovale (n = 251) P. malariae (n = 124) P. knowlesi (n = 3)
Median age, years (range) 37 (0–88)   38 (0–87) 30 (1–88) 36 (2–73) 39 (4–76) 40 (35–52)
Male, n (%)a 3918 (69) 304 (69) 2712 (68) 632 (74) 179 (71) 89 (72) 2 (67)
Travellers without pre-travel visit, n (%)b 2891 (53) 229 (54) 2173 (57) 373 (47) 69 (29) 46 (39) 1 (50)
Reason for travel, n (%)c
 VFRs 3017 (53) 178 (40) 2422 (60) 277 (32) 90 (36) 50 (40) 0 (0)
 Business 967 (17) 124 (26) 623 (16) 127 (15) 60 (24) 32 (26) 1 (33)
 Tourism 918 (16) 87 (20) 530 (13) 247 (29) 34 (14) 19 (15) 1 (33)
 Missionaryd 514 (9) 49 (11) 330 (8) 74 (9) 40 (16) 20 (16) 1 (33)
 Military 184 (3) 8 (2) 44 (1) 108 (13) 23 (9) 1 (1) 0 (0)
 Student 77 (1) 6 (1) 50 (1) 18 (2) 1 (<1) 2 (2) 0 (0)
 Migrant worker 11 (<1) 0 (0) 7 (<1) 2 (<1) 2 (1) 0 (0) 0 (0)
 Planned medical care 4 (<1) 1 (<1) 2 (<1) 1 (<1) 0 (0) 0 (0) 0 (0)
 Research 3 (<1) 0 (0) 0 (0) 2 (0.2) 1 (<1) 0 (0) 0 (0)
Region of exposure, n (%)
 Sub-Saharan Africa 4705 (83) 404 (91) 3771 (94) 167 (20) 244 (97) 119 (96) N/A
 South Central Asia 309 (5) 6 (1) 28 (1) 272 (32) 2 (1) 1 (1) N/A
 Southeast Asia 266 (5) 17 (4) 112 (3) 133 (15) N/A 1 (1) 3 (100)
 South America 195 (3) 6 (1) 16 (<1) 171 (20) 1 (<1) 1 (1) 0 (0)
 Oceania 96 (2) 3 (1) 13 (<1) 77 (9) 2 (1) 1 (1) 0 (0)
 Caribbean 45 (1) 2 (<1) 42 (1) 1 (<1) 0 (0) 0 (0) 0 (0)
 North Africa 39 (1) 2 (<1) 26 (1) 8 (1) 2 (1) 1 (1) 0 (0)
 Central America 30 (<1) 3 (1) 2 (<1) 25 (3) 0 (0) 0 (0) 0 (0)
 Northeast Asia 3 (<1) 0 (0) 0 (0) 3 (<1) 0 (0) 0 (0) 0 (0)
 Middle East 1 (<1) 0 (0) 1 (<1) 0 (0) 0 (0) 0 (0) 0 (0)
Median trip duration, days (IQR) 32 (20–75) 31 (17–76) 31 (20–63) 36 (18–101) 56 (22–156) 34 (26–95) 21 (21–52)
Median days between return and presenting to a site (IQR) 11 (6–21) 10 (5–17) 10 (5–16) 30 (13–76) 52 (16–98) 35 (15–64) 21 (2–23)
Hospitalized, n (%)e 3523 (62) 345 (78) 2537 (63) 477 (56) 105 (41) 59 (48) 0 (0)
  1. aInformation was not available for 47 travellers (2 with P. falciparum)
  2. bInformation was not available for 268 travellers (168 with P. falciparum, 59 with for P. vivax, 14 with P. ovale, 5 with P. malariae, and 1 with P. knowlesi)
  3. cInformation was not available for 4 travellers (3 with P. falciparum and 1 with P. vivax)
  4. dIncludes missionaries, volunteers and aid workers
  5. eInformation was not available for 1 traveller with P. falciparum