New research suggests that the recent steep increase in cases of acute Hepatitis C Virus infection is associated with increases in opioid injection. Across the nation, researchers found substantial, simultaneous increases in acute Hepatitis C (+133 percent) and admissions for opioid injection (+93 percent) from 2004 to 2014. These increases were seen at not only the national level, but also when data were analysed by state, by age, by race and ethnicity. Taken together, the findings point to a close relationship between the two troubling trends.
For an analyses about the opioid crisis, see here and here.
The new analysis builds upon earlier research identifying a similar regional trend in four Appalachian states that faced increasing rates of new Hepatitis C Virus infection.
Hepatitis C is spread through infected blood, which can contain high levels of the virus in a single drop. This, combined with needle and injection equipment sharing behaviours among some people who inject drugs, is fuelling infections among younger Americans.
Until recently, Hepatitis C primarily affected older generations, but as the opioid crisis worsened, the virus gained a foothold among younger Americans. Most of the 3.5 million people in the United States already living with Hepatitis C are born between 1945 and 1965, but the greatest increases in new infections are being seen in young people. And as infections increase among young women, so has the rate of Hepatitis C among pregnant women, placing a new generation at risk.
 Zibbell et al: Increases in Acute Hepatitis C Virus Infection Related to a Growing Opioid Epidemic and Associated Injection Drug Use, United States, 2004 to 2014 in American Journal of Public Health – 2017
 Zibbell et al: Increases in Hepatitis C Virus Infection Related to Injection Drug Use Among Persons Aged ≤30 Years — Kentucky, Tennessee, Virginia, and West Virginia, 2006–2012 in Morbidity and Mortality Weekly Report (MMWR) – 2015. See here.