Dengue fever/dengue haemorrhagic fever (DF/DHF) appears to be emerging in Hanoi in recent years. A case-control study was performed to investigate risk factors for the development of DF/DHF in Hanoi. A total of 73 patients with DF/DHF and 73 control patients were included in the study. The risk factor analysis indicated that living in rented housing, living near uncovered sewers, and living in a house discharging sewage directly into to ponds were all significantly associated with DF/DHF. People living in rented houses were 22 times more at risk of DF/DHF than those living in their own homes [adjusted odds ratio (aOR) 22, 95% confidence interval (CI) 11-46]. People living in an unhygienic house, or in a house discharging sewage directly to the ponds were 34 times and 43 times, respectively, more likely to be associated with DF/DHF (aOR 34, 95% CI 1-117; aOR 43, 95% CI 11-169). These results contribute to the understanding of the dynamics of dengue transmission in Hanoi, which is needed to implement dengue prevention and control programmes effectively and efficiently.
Toan, D. T. T., Hoat, L. N., Hu, W., Wright, P., & Martens, P. (2015). Risk factors associated with an outbreak of dengue fever/dengue haemorrhagic fever in Hanoi, Vietnam. Epidemiology and Infection, 143(8), 1594-1598. https://doi.org/10.1017/S0950268814002647