1.   His execution was to have been the first in California using intravenous drugs.

2.   The abuse of intravenous drugs is still uncommon.

3.   In Asia, the virus had spread rapidly among intravenous drug users and female prostitutes.

4.   Intake of potentially hepatotoxic drugs, intravenous drug addiction and previous blood transfusions were ruled out in all patients.

5.   The remainder had acquired HBV by intravenous drug use, transfused blood products, and presumed sexual contact.

6.   None admitted intravenous drug abuse, nor had received antiviral or immunosuppressive treatment.

7.   Most HIV-positive intravenous drug users are also infected by hepatitis C virus.

8.   The Scottish Office says forty-five per cent of the cases are related to homosexual activity and thirty-two per cent to intravenous drug abuse.