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  • Hepatitis

    Can You Sexually Transmit Hepatitis A?

    Yes — you can sexually transmit hepatitis A, mainly through oral-anal contact, which is why it shows up in outbreaks among men who have sex with men. Hepatitis B is the more classic blood-borne and se

    Mark Riegel, MD
  • Hepatitis

    Hepatitis A Vaccine: Who Needs It and When

    The hepatitis A vaccine is a safe, highly effective shot that prevents hepatitis A virus (HAV) infection of the liver. The CDC recommends it for all children, for adults at higher risk — international

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B Cure: Is There a Cure or Just Control?

    There's no cure for chronic hepatitis B yet, but there's effective control. Antiviral pills like tenofovir or entecavir suppress the virus and protect the liver, though most people take them for life

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B Reactivation: Can a Cleared Infection Return?

    Yes — a hepatitis B infection that looks "cleared" or sits quiet can come roaring back. This is called hepatitis B reactivation, and it usually happens when the immune system is suppressed (by chemoth

    Mark Riegel, MD
  • Hepatitis

    Hepatitis C and HIV Coinfection: What Changes

    Hepatitis C and HIV coinfection means a person carries both the hepatitis C virus (HCV) and HIV at the same time. The two share blood and sexual routes, so they often travel together. Coinfection spee

    Mark Riegel, MD
  • Hepatitis

    Hepatitis C Reinfection: Can You Get It Again After Cure?

    Yes — you can get hepatitis C again after a cure. Direct-acting antiviral pills clear the virus in more than 95% of people WHO, but they don't leave behind immunity. Hepatitis C antibodies stay positi

    Mark Riegel, MD
  • Hepatitis

    How Long Does Hepatitis Live Outside the Body?

    Hepatitis B virus (HBV) is unusually hardy outside the body. On dry surfaces — a shared razor, a toothbrush, a countertop with dried blood — it can stay infectious for days, even after the blood looks

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B and C: Can You Have It and Not Know?

    Yes — you can absolutely have hepatitis B or C and feel completely fine. Both infect the liver, both spread through blood and (for hepatitis B) sex, and both are frequently silent. Many people with he

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B During Pregnancy: Protecting Your Baby

    Hepatitis B during pregnancy is highly manageable, and with the right steps your baby is very likely to stay infection-free. Every pregnancy is screened for the virus, and a baby born to an infected p

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B Vaccine: Schedule, Doses, and Boosters

    The hepatitis B vaccine is a safe, highly effective shot series that teaches your immune system to block the hepatitis B virus (HBV) before it can infect your liver. ACIP recommends it for all adults

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B Window Period and How Soon to Test

    Hepatitis B has a long window: HBsAg, the marker of active infection, usually becomes detectable within several weeks of exposure, but symptoms average about 90 days out (range 60–150 days) CDC. For a

    Mark Riegel, MD
  • Hepatitis

    Hepatitis C Window Period: When to Test After Exposure

    The hepatitis C window period is the gap between exposure and when a test can reliably detect infection. An HCV RNA (viral) test can find the virus within a couple of weeks, while the standard antibod

    Mark Riegel, MD
  • Hepatitis

    Is it Possible to Give Hepatitis C to Someone Else?

    Yes — you can give hepatitis C to someone else, but only by getting your blood into their bloodstream. The virus lives in blood, so the real risk is sharing needles or drug-injection equipment. It doe

    Mark Riegel, MD
  • Hepatitis

    Hepatitis A Symptoms and How Long They Last

    Hepatitis A is an acute viral liver infection that, when it causes symptoms at all, brings fatigue, nausea, abdominal pain, jaundice, dark urine, and pale stools — usually starting 2 to 7 weeks after

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B Symptoms: Early Signs to Watch For

    Hepatitis B often causes no symptoms at all. When it does, acute illness can bring fatigue, fever, poor appetite, nausea, belly pain, joint pain, dark urine, pale stools, and yellowing of the skin or

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B Test Results: How to Read Your Panel

    Your hepatitis B panel is read by combining three markers: HBsAg (current infection), anti-HBs (immunity), and total anti-HBc (past or current exposure). HBsAg positive means active infection. Anti-HB

    Mark Riegel, MD
  • Hepatitis

    Hepatitis C Symptoms in Men and Women

    Hepatitis C usually causes no symptoms at all. When symptoms do show up, they're vague and easy to miss — fatigue, poor appetite, belly pain, or dark urine — and jaundice (yellowing of the skin and ey

    Mark Riegel, MD
  • Hepatitis

    Twinrix Vaccine: Hepatitis A and B

    The Twinrix vaccine protects against both hepatitis A and hepatitis B in one series of shots. It combines the standard hepatitis A and hepatitis B vaccines, given over a course of injections, so you b

    Mark Riegel, MD
  • Hepatitis

    Hepatitis C Test: Antibody vs RNA Explained

    A hepatitis C test starts with an antibody test that checks whether your body has ever encountered the virus. If that's positive, the lab automatically runs an HCV RNA (viral) test to confirm whether

    Mark Riegel, MD
  • Hepatitis

    Hepatitis A Transmission Through Sex and Food

    Hepatitis A spreads by the fecal-oral route, meaning tiny traces of stool from an infected person reach another person's mouth. That happens through contaminated food or water and through sex — especi

    Mark Riegel, MD
  • Hepatitis

    Is Hepatitis B an STD? How It Spreads Sexually

    Yes — hepatitis B is a sexually transmitted infection, and it's the most sexually transmissible of the three common blood-borne viruses (hepatitis B, hepatitis C, and HIV). The virus lives in blood, s

    Mark Riegel, MD
  • Hepatitis

    Hepatitis Vaccines

    The hepatitis B vaccine is the single best way to prevent hepatitis B, a blood-borne and sexually transmitted liver infection. ACIP recommends it for all adults aged 19–59, and for adults 60 and older

    Mark Riegel, MD
  • Hepatitis

    Hepatitis and Pregnancy: Risks to Baby and Care

    Hepatitis and pregnancy mostly comes down to hepatitis B, which can pass from parent to baby at birth. Every pregnancy is screened for it. When a parent tests positive, giving the newborn both the hep

    Dr. Sarah Chen, MD
  • Hepatitis

    Can Hepatitis C Be Sexually Transmitted?

    Yes, hepatitis C can be sexually transmitted, but the risk is low. Hepatitis C spreads when blood carrying the virus enters another person's bloodstream, and sex usually doesn't involve enough blood c

    Mark Riegel, MD
  • Hepatitis

    Hepatitis C Cure: New Treatment Success Rates

    Yes — hepatitis C is curable for almost everyone. A short, all-oral course of direct-acting antiviral (DAA) pills, taken for roughly two to three months, clears the virus in more than 95% of people, a

    Mark Riegel, MD
  • Hepatitis

    Hepatitis C and Cirrhosis: How Liver Damage Happens

    Hepatitis C and cirrhosis are linked by time: chronic infection with the hepatitis C virus (HCV) slowly scars the liver, and over roughly 20–30 years that scarring can build into cirrhosis, liver fail

    Mark Riegel, MD
  • Hepatitis

    Hepatitis B Treatment: Antivirals vs Watchful Waiting

    Hepatitis B treatment depends on the stage. Acute infection usually needs only rest and supportive care while your body clears the virus. Chronic hepatitis B has no cure, but FDA-approved antiviral pi

    Mark Riegel, MD
  • Hepatitis

    Hepatitis A, B, C's

    Hepatitis A, B, and C are three different viruses that all inflame the liver but behave very differently. Hepatitis A is a short-term infection spread mainly through contaminated food, water, or close

    Mark Riegel, MD
  • Hepatitis

    Autoimmune Diseases and Hepatitis

    The term "autoimmune hepatitis" describes liver inflammation driven by your own immune system, but the question most people are really asking is about hepatitis B — a vaccine-preventable, blood-borne

    Mark Riegel, MD