Hepatitis B Prevention, Testing, and Vaccine – Protect Your Liver

Hepatitis B is a serious liver infection caused by the hepatitis B virus (HBV). It can be acute (short-term) or chronic (long-term). Chronic HBV can lead to liver damage, cirrhosis, liver cancer, and even death. Many people with chronic hepatitis B have no symptoms but can still spread the virus—making awareness and testing critical.

How Does Hepatitis B Spread?

Hepatitis B is highly contagious and spreads through infected blood, semen, or other bodily fluids. Common transmission routes include:

  • Mother-to-child during birth

  • Sharing needles or syringes

  • Unprotected sex with an infected partner

  • Sharing razors or toothbrushes

Important: Hepatitis B is NOT spread through casual contact like hugging, kissing, coughing, or sharing food/drinks.

Signs and Symptoms

Many people don’t show symptoms, but when they do, they may experience:

  • Fatigue, nausea, vomiting

  • Loss of appetite

  • Joint or muscle pain

  • Jaundice (yellow skin or eyes), dark urine, clay-colored stools

Prevention: The Hepatitis B Vaccine

The best protection against hepatitis B is vaccination. Recommended vaccines include Engerix-B, Heplisav-B, and Recombivax HB. Who should get vaccinated?

  • All infants

  • Unvaccinated children under 19

  • Adults aged 19–59

  • Adults 60+ with risk factors (and even those without risk factors)

Other prevention tips:

  • Avoid sharing needles or razors

  • Practice safe sex

  • Ensure blood safety

  • Talk to your healthcare provider if pregnant or at risk

Who Is at Risk?

You may be at higher risk if you:

  • Have multiple sexual partners or STIs

  • Have HIV or hepatitis C

  • Use injection drugs

  • Were born in or to parents from high-prevalence countries

  • Live with someone who has hepatitis B

  • Are on long-term dialysis

  • Have elevated liver enzymes

Testing and Screening

The CDC recommends all adults get tested for hepatitis B at least once in their lifetime. Testing is simple—a blood test can show if you’re infected, immune, or at risk. Pregnant women, infants of infected mothers, and those with ongoing risk should be tested more often.

Take Action Today

Author:

Katherine Chanthalangsy, PharmD

University of the Pacific (UOP) Class of 2026

References:

Centers for Disease Control and Prevention. (2016, June). HEPATITIS b [Press release]. https://www.cdc.gov/hepatitis/hbv/pdfs/HepBGeneralFactSheet.pdf

Hepatitis B Basics. (2025, August 29). Hepatitis B. https://www.cdc.gov/hepatitis-b/about/index.html

Hepatitis B vaccine. (2025, September 18). Hepatitis B. https://www.cdc.gov/hepatitis-b/vaccination/index.html

Hepatitis B vaccine (Interim) VIS. (2025, February 28). Vaccines & Immunizations. https://www.cdc.gov/vaccines/hcp/current-vis/hepatitis-b.html

Home » Hepatitis B Foundation. (n.d.). https://www.hepb.org/

World Health Organization: WHO & World Health Organization: WHO. (2025, July 23). Hepatitis B. https://www.who.int/news-room/fact-sheets/detail/hepatitis-b

Next
Next

Upcoming Medi-Cal Rx GLP-1 Coverage Changes: What Patients Need to Know About Ozempic, Wegovy, and More in 2026