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     Untuk mengetahui prevalensi HBsAg dan hubungannya dengan tingkat pengetahuan, sikap, dan perilaku terhadap hepatitis B, dilakukan penelitian pada 81 Wanita Penjaja Seks (WPS) di Bitung. Pemeriksaan HBsAg menggunakan teknik ELISA. Penilaian tingkat pengetahuan, sikap, dan perilaku terhadap hepatitis B menggunakan kuesioner yang telah dianalisis dengan uji korelasi Pearson.

             Subyek penelitian (SP) 81 orang, 82,7% memiliki tingkat pengetahuan kurang, 90,1% mempunyai sikap kurang dan 100% berperilaku berisiko tertular hepatitis B. Seropositif HBsAg terdapat pada 6,2% SP. Sebagian besar (92,6%) pernah mendapat informasi pencegahan IMS/HIV-AIDS, 11,1% pernah menerima informasi hepatitis B. Tidak terdapat hubungan bermakna antara karakteristik sosiodemografik dan pekerjaan sebagai WPS, serta informasi hepatitis B dengan kepositivan HBsAg. Kepositivan HBsAg cenderung dijumpai pada SP dengan pengetahuan dan sikap kurang, serta berperilaku berisiko tertular hepatitis B, meskipun secara statistik tidak bermakna.

             Dapat disimpulkan bahwa prevalensi  kepositivan serologik HBsAg pada WPS di Bitung tidak banyak berbeda dengan penelitian pada WPS di beberapa tempat  lain. Pengetahuan dan sikap WPS terhadap hepatitis B masih kurang, semuanya berperilaku berisiko tertular hepatitis B. Tidak terdapat hubungan bermakna antara faktor risiko dengan kepositivan serologik HBsAg. (MDVI 2007; 34/2 : 52-60)

Kata kunci : hepatitis B, HbsAg, wanita penjaja seks, pengetahuan-sikap dan perilaku

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             To determine the HBsAg prevalence and to asses the association of HBsAg seropositivity with knowledge, attitudes dan practices (KAP) surrounding hepatitis B  among female CSWs in Bitung; an  investigation was conducted among 81 female CSWs. ELISA was used to determine HBsAg; level of hepatitis , KAP was carried out by questionnaires analyzed by Pearson’s correlation test.

             From  81 subjects, 82.7%  have minimal (mosty low level) hepatitis B knowledge; 90.1% with negative attitudes;100% have  risk behaviour. The seropositivity of HBsAg was 6.2%. Mostly (92.6%) had got information about STI/HIV-AIDS prevention; 11.1% had heard about hepatitis B. No significant correlation among sosiodemographic characteristic, jobs description, and hepatitis B information with HBsAg seropositivity. Those with low level of knowledge, negative attitudes, and risk behaviour for hepatitis B tend to be positive for HBsAg, but not statistically significant differences.

             It is concluded thad no significant difference of the HBsAg seropositivity prevalence among female CSWs in Bitung and some other places. Knowledge and attitudes of females CSW for hepatitis B were minimal; all had high risk behaviour for hepatitis B. No significant association among risk factors and HBsAg seropositivity. (MDVI 2007; 34/2: 52-60)

Key words : hepatitis B, HbsAg, female commercial sex workers, knowledge-attitudes and practices.