Quantifying the emergence of dengue inCE OF DENGUE IN HANOI, 1998-2009

Hoang Quoc Cuong,Nguyen Nhat Cam,Tran Nhu Duong,Peter Horby,Maciej F Boni,Marcel Wolbers,Tran Vu Phong,Nguyen Tran Hien

doi:10.1186/1753-6561-5-s1-p48

Abstract

Background There was a large outbreak of dengue fever (DF)/ dengue hemorrhagic fever (DHF) with 16164 suspected cases in Hanoi in 2009 which was 5.2 fold higher than the same period of 2008. We aim to investigate if DF/ DHF is really re-emerging in Hanoi since the last large outbreak in 1998 by observing the disease incidence and the average age of infection from 1998-2009 because the single bad year is not sufficient to conclude that dengue is re-emerging in Hanoi. Also, the standardized morbidity ratios (SMR) in 14 center districts of Hanoi in 2009 were calculated to identify the high-risk districts after correcting for demographic factors. We also look at the climate factors which can influence the dengue incidence in Hanoi.

Highlights

There was a large outbreak of dengue fever (DF)/ dengue hemorrhagic fever (DHF) with 16164 suspected cases in Hanoi in 2009 which was 5.2 fold higher than the same period of 2008
We aim to investigate if DF/ DHF is really re-emerging in Hanoi since the last large outbreak in 1998 by observing the disease incidence and the average age of infection from 1998-2009 because the single bad year is not sufficient to conclude that dengue is re-emerging in Hanoi
We look at the climate factors which can influence the dengue incidence in Hanoi

Summary

Introduction

There was a large outbreak of dengue fever (DF)/ dengue hemorrhagic fever (DHF) with 16164 suspected cases in Hanoi in 2009 which was 5.2 fold higher than the same period of 2008. We aim to investigate if DF/ DHF is really re-emerging in Hanoi since the last large outbreak in 1998 by observing the disease incidence and the average age of infection from 1998-2009 because the single bad year is not sufficient to conclude that dengue is re-emerging in Hanoi. The standardized morbidity ratios (SMR) in 14 center districts of Hanoi in 2009 were calculated to identify the high-risk districts after correcting for demographic factors. We look at the climate factors which can influence the dengue incidence in Hanoi

Objectives

Methods

Conclusion