Table 5.

Entomological and climatic characteristics of the laboratory-confirmed dengue patients notified in Surat city, Gujarat, India, 2011–2016

Variable	2011	2012	2013	2014	2015	2016	2011–2016
Entomological indices
Houses surveyed
Mean ± SD	–	254 ± 202.9	290.3 ± 329.4	238.2 ± 181.3	222.6 ± 152.6	210.8 ± 151.9	237.2 ± 205
Median (IQR)	–	180 (131–304)	209 (143–309)	158 (138–302)	163 (136–288)	155 (134–240)	163 (136–288)
House index (%)
Mean ± SD	–	1 ± 1.5	0.8 ± 0.8	0.8 ± 1	0.8 ± 1	0.9 ± 0.7	0.9 ± 1
Median (IQR)	–	0.7 (0.3–1.4)	0.7 (0.3–0.9)	0.7 (0.2–1)	0.7 (0.3–1)	0.7 (0.5–1.3)	0.7 (0.3–1.1)
Breteau index (%)
Mean ± SD	–	1.2 ± 1.7	0.8 ± 0.8	1 ± 3.5	0.9 ± 2.5	1 ± 3.3	1 ± 2.7
Median (IQR)	–	0.7 (0.3–1.4)	0.7 (0.3–0.9)	0.7 (0.2–1)	0.7 (0.3–1)	0.7 (0.5–1.3)	0.7 (0.3–1.1)
Container index (%)
Mean ± SD	–	0.6 ± 1	0.3 ± 0.4	0.5 ± 1.6	0.4 ± 1	0.5 ± 2.3	0.5 ± 1.5
Median (IQR)	–	0.3 (0.1–0.6)	0.3 (0.1–0.4)	0.3 (0.1–0.4)	0.3 (0.1–0.5)	0.3 (0.2–0.5)	0.3 (0.1–0.5)
Median (IQR) vector density per 10 man-hour	0.8 (0.6–1)	0.8 (0.5–1.4)	0.9 (0.5–1.4)	0.8 (0.8–1)	0.8 (0.6–1.5)	1 (0.8–2)	0.8 (0.6–1.3)
Climatic characteristics
Temperature°C (mean ± SD)	27.2 ± 2.9	27 ± 3.1	27 ± 2.6	27.8 ± 3	27.7 ± 2.9	27.6 ± 2.7	27.4 ± 2.8
Relative humidity (%), mean ± SD	67.8 ± 14	66.4 ± 14	67.8 ± 14.8	66.2 ± 12	65.9 ± 12	66.3 ± 14.4	66.7 ± 13
Rainfall (mm), mean ± SD	254.8 ± 160.6	184 ± 176.7	427 ± 253.7	241.3 ± 185.6	222.2 ± 152.9	192.2 ± 109.3	254 ± 182.9
Number of rainy days	70	64	77	50	34	55	350