Epidemic Dengue Hemorrhagic Fever in Rural Indonesia

III. Entomological Studies

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  • Directorate of Prevention and Control of Communicable Diseases, Ministry of Health, U.S. Naval Medical Research Unit No. 2, Jakarta Detachment, National Institute of Health Research and Development, Ministry of Health, Yogyakarta, Java, Indonesia

Entomological studies were carried out during a dengue hemorrhagic fever epidemic in Central Java in December 1976. Both Aedes aegypti and Aedes albopictus were widely distributed in Bantul, but the latter species was more abundant. Comparative studies on the vector competence of the two species showed that Ae. albopictus had a higher susceptibility than Ae. aegypti to oral infection with all four dengue serotypes. The two species were equally competent in transmitting the Bantul strain of dengue 3 virus after parenteral infection. The data suggest that Ae. albopictus could have been an important vector in this epidemic, but no direct observations were obtained to define the respective contribution of either Ae. albopictus or Ae. aegypti.

Author Notes

Present address: University of Illinois, 320 Morrill Hall, Department of Entomology, Urbana, Illinois 61801.