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[A dengue epidemic at Futuna]
Bulletin De La Societe De Pathologie Exotique Et De Ses Filiales
|November 1, 1978
Summary
During a 1976-1977 outbreak in Futuna, scientists identified dengue virus type I-like strains. The Aedes polynesiensis mosquito was confirmed as the primary vector, highlighting its role in transmitting the virus.
Area of Science:
- Virology
- Medical Entomology
Context:
- An outbreak occurred in Futuna (Horne Islands) between October 1976 and January 1977.
- Dengue virus infections are a significant public health concern in tropical regions.
Purpose:
- To identify the causative agent of the outbreak in Futuna.
- To determine the vector responsible for virus transmission.
- To assess the serological evidence of infection in the affected population.
Summary:
- Eleven virus strains similar to dengue virus type I were isolated from patients during the acute phase of the outbreak.
- Immunological tests on paired sera indicated immune responses in 8 out of 12 samples and recent infection in 4 out of 17.
- Entomological surveys identified Aedes polynesiensis as the primary vector, with no evidence of Aedes aegypti.
- A viral strain was successfully isolated from Aedes polynesiensis, confirming its role in transmission.
Impact:
- This study confirmed the presence of dengue virus type I-like strains in Futuna.
- It identified Aedes polynesiensis as the main vector, crucial for understanding and controlling future outbreaks.
- The findings contribute to the epidemiological surveillance of arboviruses in the Pacific region.