Table 3.

Factors associated with collection of Culex mosquito vectors for Japanese encephalitis virus near human dwellings in Ninh Kieu, Can Tho City, Vietnam*

Risk factor	No. mosquitoes	Cx. vishnui subgroup	Cx. tritaeniorhynchus	Cx. gelidus	Cx. quinquefasciatus	Culex males	Proportion of blood-filled mosquitoes
No. pigs in household	1.03†	1.05†	1.05†
Pig density in ward				1.02†
Rice field or fish pond				−9.65
Rice fields and fish ponds in ward
Other livestock in household				86.0
Large ruminant density in ward					−1.28‡
No. persons in household					1.13†
Population density in ward
Pets in household

^*Change in number of mosquitoes is the anti-logarithm of the coefficient β. Non-significant variables were confounders in the models.

^†P < 0.05.

^‡P < 0.01.