(added on 2008/11/07)
Hepatitis C on the move 丙型肝炎在遷移
Hepatitis C is an RNA virus that is commonly spread through needle sharing in heroin users. The virus mutates as it spreads from one place to another. Genotype 1 and 3 are common in South and South East Asia. Genotype 6 is unique as it is found mostly in South East Asia including Hong Kong. The genotypic pattern of hepatitis C somehow reflects the epidemiology of heroin addiction, but there are still many gaps in our knowledge as to why one genotype should predominate in a specific location.