Prediction and prevention of dengue epidemics
Fauran, P.
Bulletin de la Societe de Pathologie Exotique 89(2): 123-6; discussion 127
1996
ISSN/ISBN: 0037-9085 PMID: 8924770 Document Number: 456531
Prediction and prevention of dengue epidemics are based on information gathered about the mosquito vector species, the dengue types transmitted, the vertebrate hosts, and their environment. Although Aedes aegypti is the most important vector, other Aedes spp. may also transmit dengue viruses. Populations of vector mosquitoes are evaluated using several indices: Breteau and/or positive house index, number of indoor resting Aedes females, etc. The 4 dengue types can replicate in vertebrate hosts other than humans and in mosquito species other than A. aegypti. The incidence of dengue in a population is largely variable according to immunity status, vector competence and virus strains. Concomitant infections by 2 types of dengue virus or by another Alphavirus pathogen have been observed. The environmental factors influencing the dengue ecosystem are mostly climatic (temperature, rainfall, wind), but also anthropic (transport, public buildings). Prevention of dengue epidemics must be based on public health education in schools, community participation and epidemiological surveillance linked with good vector control teams. Despite intensive research on dengue and the action undertaken during the last 40 years, dengue remains the main cause of viral morbidity worldwide.