Hanyar farko ta watsawa tana nuna yaduwar cutar ta HBV a cikin yanki. A cikin yankunan da ke fama da cutar kamar Amurka da Yammacin Turai, shan magungunan allura da yin jima'i ba tare da kariya ba sune hanyoyin farko, kodayake wasu dalilai na iya zama mahimmanci. A cikin yankunan da ke fama da matsakaici, waɗanda suka haɗa da Gabashin Turai, Rasha, da Japan, inda kashi 2<unk>7% na yawan jama'a ke fama da cutar, cutar ta yadu tsakanin yara. A cikin yankunan da ke fama da cutar kamar China da Gabashin Asiya ta Kudu, yaduwar cutar ta fi yawa a lokacin haihuwa, kodayake a wasu yankunan da ke fama da cutar kamar Afirka, yaduwar cutar ta kasance mai mahimmanci a lokacin yara. A cewar Hukumar Lafiya ta Duniya, kowace shekara ana samun kusan kashi 90 cikin ɗari na sabbin masu kamuwa da cutar ta HBV a Indiya, wanda ya biyo bayan kusan miliyan 12 da miliyan 120 a Afirka ta Tsakiya. A cewar Hukumar Lafiya ta Duniya, yawan mutanen da ke fama da cutar ta HBV ya ragu da kusan kashi 90 cikin ɗari a China da miliyan 12 a Indiya. A cewar Hukumar Lafiya
China da Kudu maso gabashin Asiya