Geographic region(s) | Western Africa, South Sudan | Eastern Europe, Central Asia, Southeast Asia, China, Japan, the Pacific Islands, Amazon Basin of South America, Middle East | Central America, North America, Western Europe, Australia, New Zealand |
Predominant mode (s) of transmission | Perinatal, parenteral | Parenteral, sexual (heterosexual or homosexual) | Parenteral, sexual (heterosexual or homosexual) |