Each intravenous drug user contracting Hepatitis C is likely to infect around 20 other people with the virus, half of these transmissions occurring in the first two years after the user is first infected, a new study estimates.
The work, led by researchers from Oxford University, suggests that early diagnosis and treatment of Hepatitis C in intravenous drug users could prevent many transmissions by limiting the impact of these ‘super-spreaders’ (a highly infectious person who spreads a disease to many other people).
Working out ‘who has infected who’ in fast-spreading diseases such as influenza is often relatively straightforward, but in slow-spreading diseases such as Hepatitis C and HIV, where instances of transmission are spread over months or years, it is extremely difficult. The new approach, developed by a team from Oxford University, University of Athens and Imperial College London, combines epidemiological surveillance and molecular data to describe in detail, for the first time, how Hepatitis C spreads in a population.
Source: University of Oxford – February 1, 2013