Most folks don’t even get sick when they get infected acutely with the Hep C virus, so it’s difficult to identify them. I was discussing this very situation with the UWisconsin Hepatology folks two days ago, and they rarely get the opportunity to treat someone in the first 6 months of their infection, when cure rates reach 90%. Personally I’ve only had one patient myself who was identified to be an acute infection.
And once the infection is chronic (present longer than 6 months) the cure rates drop enormously. If you’re lucky enough to have genotype 2 or 3 (uncommon in this country), the cure rate may be 80%, but if you have genotye 1, then the cure rate is generally under 40%. And that’s after a year of weekly interferon injections and daily ribavirin doses which tend to make you quite ill, and cost tens of thousands of dollars, too.
The good news: Hepatitis C generally only kills 4-5% of the people that have it; the rest will live with the disease and die of something else. Unfortunately, 4-5% is still a very high number, given the prevalence of the disease.
The other good news: New antivirals are coming out within the next few years, to be taken with interferon and ribavirin, which look to raise the cure rate and shorten the treatment time.
Also be aware that Hepatitis C itself does NOT directly cause hepatoma (unlike hepatitis B). The hepatoma is due to the cirrhosis, and only 20% of people who have hepatitis C get cirrhosis. Even so, Hep C patients need ultrasounds or other studies once or twice a year to screen for hepatoma.
Things really go to hell if a person with Hep C continues to drink alcohol. Or has a co-infection with Hep B, or HIV.
Who should be screened for hepatitis C? Basically, those with risk factors such as sharing of needles, IV drug users, sharing of cocaine straws (the exact mechanism here isn’t quite clearly understood), dialysis patients, organ transplant patients, those that got blood or blood products prior to 1992, folks with elevated liver enzymes on blood testing, those who have HIV or Hep B infections, and those who have intimate contact with Hep C patients.
Fortunately Hep C is not real easily passed via sex. Recent studies indicate the following: A woman who has a monogamous sexual relationship with a Hep C infected man, and doesn’t use condoms, but avoids high risk sexual practices (anal sex, etc) has only a 0.6% chance of picking up the virus per year. Of course, after 10 years of doing that, the risk has risen to 6%, but even so, the odds aren’t horrible.
Sorry about all that, I just got done re-writing our department’s screening and monitoring protocol for Hepatitis C. So I’ve been thinking about it a LOT.