Abstract
Mosquito density could predict the risk of Dengue Virus (DENV) transmission in certain area. Ovitrap Index (OI) is one of the methods to measure the mosquito density beside other methods such as Stegomyia Indices and free larvae index. Ovitrap index is cheaper, more appliacable and sensitive to detect Aedes sp activity to lay their eggs on the wall of container. The aims of this research were to measure ovitrap index in endemic DENV areas, to find out the preferences of female Aedes sp to lay their eggs, and find out the correlation between OI and dengue cases in endemic DENV areas. Type of this study was decriptive with cross sectional design. The area of study was in Community Health center Purwokerto Timur II in Kranji, Sokanegara and Purwokerto Lor. Ovitrap were installed at 50 houses of each vilagges (one indoor, one outdoor), with total ovitrap 100 in each villages. After 6 days of installation, ovistrips were collected and the eggs were counted. The Ovitrap index in three villages were observed at percentage more than 50%, with the highest OI detected in Kranji Village (97.56%). Female Aedes sp were monitored to lay their eggs outdoor than indoor. The OI is not always relevant to predict the dengue cases but could inform the risk of DENV tranmission in certain area. The community should do efforts to minimize potential breeding sites, mainly unused container outdoor to reduce the mosquito density.
Highlights
Mosquito density could predict the risk of Dengue Virus
detect Aedes sp activity to lay their eggs on the wall of container
Type of this study was decriptive with cross sectional design
Summary
Hasil OI dari ketiga desa endemis dari ketiga endemis tersebut OI nya semua tergolong tinggi, dengan persentase tertinggi di atas 50% dengan rentang antara 51.02%. Kranji posisi outdoor (97.56%), sedangkan populasi nyamuk yang cukup tinggi di terendah terlihat di Desa Sokanegara pada ketiga desa lokasi penelitian. Dengan rata-rata jumlah telur per ovitrap yang ditemukan di ketiga desa penelitian diharapkan upaya pemberantasan nyamuk harus serius dilakukan. Kasus DBD yang terus terjadi setiap tahunnya di ketiga desa tersebut, dan temuan OI yang tinggi seharusnya mencerminkan gambaran hubungan antara kepadatan nyamuk dengan kasus DBD yang terjadi di area penelitian. Berdasarkan Gambar 4, Ovitrap index pada posisi outdoor jauh lebih tinggi dibandingkan pada posisi indoor. Berdasarkan hasil tersebut, dapat dilihat bahwa nyamuk Aedes sp cenderung untuk bertelur di kontainer yang terletak di luar rumah. Berdasarkan penelitian ini, maka perlu diperhatikan kontainer-kontainer di sekitar rumah seperti barang-barang bekas yang berpotensi sebagai perindukan nyamuk. Kasus DBD yang terjadi pada saat pemasangan ovitrap di area penelitian
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