Table 1.

Association of CHIKV infection with characteristics of participants, from Sistan and Baluchistan province, southeastern Iran, 2017–2018

Variables	Chik. Neg. (n = 119) (%)	Chik. Pos. (n = 40) (%)	p-value
Gender
Female	57 (73.1)	21 (26.9)	0.584
Male	62 (76.5)	19 (23.5)
Age (Mean ± SD)	31.7 ± 15.3	41.5 ± 16.3	0.001
Epidemiological History
Abroad travelling history, N (%)	21 (17.6)	40 (100)	< 0.001
Travel Duration (day) (Mean ± SD)	15.7 ± 16.7	26.83 ± 39.3	0.218
Country with a travel history
Afghanistan	2 (1.7)	0 (0)	0.230
Malaysia	1 (0.8)	0 (0)	0.426
Pakistan	18 (15)	40 (100)	0.001
City of residence
Chabahar	7 (5.9)	4 (10)	0.367
Iranshahr	14 (11.7)	2 (5)	0.224
Konarak	3 (2.5)	0 (0)	0.313
Mirjaveh	2 (1.7)	0 (0)	0.411
Qasr-e Qand	1 (0.8)	0 (0)	0.562
Rask	1 (0.8)	0 (0)	0.562
Saravan	4 (3.4)	0 (0)	0.242
Sarbaz	50 (42)	26 (65)	0.010
Zabol	1 (0.8)	0 (0)	0.562
Zahedan	36 (30.2)	8(20)	0.220
Villager	57 (47.9)	19 (47.5)	0.451
Season of Symptom Onset
Spring	34 (28.6)	19 (47.5)	0.042
Summer	48 (40.3)	8 (20)
Fall	17 (14.3)	0 (0)
Winter	7 (5.9)	2 (5)
Mosquito bite	30 (25.2)	8 (20)	0.096
Clinical signs
Chill	1 (0.8)	7 (17.5)	< 0.001
Myalgia	40 (33.6)	20 (50)	0.321
Rash	5 (4.2)	2 (5)	0.646
Headache	34 (28.6)	11 (27.5)	0.020
Conjunctivitis	11 (9.2)	2 (5)	0.064
Retro orbital pain	14 (11.7)	3 (7.5)	0.078
Stomachache	10 (8.4)	3 (7.5)	0.426
Nausea	18 (15.1)	7 (17.5)	0.658
Vomiting	17 (14.3)	7 (17.5)	0.679
Diarrhea	12 (10)	7 (17.5)	0.608
Laboratory findings
Leukopenia	9 (7.5)	2 (5)	0.191
Platelet count(Mean ± SD)	134,486 ± 113,962	131,730 ± 126,948	0.958
WBC count(Mean ± SD)	9940 ± 1720	4980 ± 140)	0.353