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Silent spread of dengue and dengue haemorrhagic fever to Coimbatore and Erode districts in Tamil Nadu, India, 1998: need for effective surveillance to monitor and control the disease

Published online by Cambridge University Press:  03 November 2000

J. SINGH ,
N. BALAKRISHNAN ,
M. BHARDWAJ ,
P. AMUTHADEVI ,
E. G. GEORGE ,
K. SUBRAMANI ,
K. SOUNDARARAJAN ,
N. C. APPAVOO ,
D. C. JAIN  and
R. L. ICHHPUJANI
...Show all authors
J. SINGH
Affiliation:
National Institute of Communicable Diseases, 22 Shamnath Marg, Delhi-110054, India
N. BALAKRISHNAN
Affiliation:
National Institute of Communicable Diseases, Shanmuga Priya Brook Lands, Coonoor-643101, Tamil Nadu, India
M. BHARDWAJ
Affiliation:
National Institute of Communicable Diseases, 22 Shamnath Marg, Delhi-110054, India
P. AMUTHADEVI
Affiliation:
Office of the Deputy Director of Health Services, Race Course Road, Coimbatore-641018, Tamil Nadu, India
E. G. GEORGE
Affiliation:
Office of the Deputy Director of Health Services, Race Course Road, Coimbatore-641018, Tamil Nadu, India
K. SUBRAMANI
Affiliation:
Corporation Health Office, Coimbatore Corporation, Coimbatore, Tamil Nadu, India
K. SOUNDARARAJAN
Affiliation:
Office of the Deputy Director of Health Services, Race Course Road, Coimbatore-641018, Tamil Nadu, India
N. C. APPAVOO
Affiliation:
Directorate of Public Health & Preventive Medicine, Government of Tamil Nadu, 259 Anna Salai, Chennai-600006, Tamil Nadu, India
D. C. JAIN
Affiliation:
National Institute of Communicable Diseases, 22 Shamnath Marg, Delhi-110054, India
R. L. ICHHPUJANI
Affiliation:
National Institute of Communicable Diseases, 22 Shamnath Marg, Delhi-110054, India
R. BHATIA
Affiliation:
National Institute of Communicable Diseases, 22 Shamnath Marg, Delhi-110054, India
J. SOKHEY
Affiliation:
National Institute of Communicable Diseases, 22 Shamnath Marg, Delhi-110054, India
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Abstract

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Dengue fever (DF) or dengue haemorrhagic fever (DHF) has not previously been reported in Coimbatore and Erode districts in Tamil Nadu in India. In 1998, 20 hospitalized cases of fever tested positive for dengue virus IgM and/or IgG antibodies. All of them had dengue-compatible illness, and at least four had DHF. Two of them died. Sixteen cases were below 10 years of age. The cases were scattered in 15 distantly located villages and 5 urban localities that had a high Aedes aegypti population. Although the incidence of dengue-like illness has not increased recently, almost 89% (95/107) of samples from healthy persons in the community tested positive for dengue IgG antibodies. The study showed that dengue has been endemic in the area, but was not suspected earlier. A strong laboratory-based surveillance system is essential to monitor and control DF/DHF.

Type
Research Article
Information
Epidemiology & Infection , Volume 125 , Issue 1 , August 2000 , pp. 195 - 200
Copyright
© 2000 Cambridge University Press