Can “Big Three Positive” (HBsAg, HBeAg, and anti-HBc positive) be transmitted?
Apr 10, 2022
Source: Cainiu Health
Dr. Jiang Weimin
Introduction
Can “Big Three Positive” Hepatitis B Be Transmitted?
Hepatitis B is a contagious disease. Its primary transmission routes include bloodborne transmission, mother-to-child (vertical) transmission, and sexual transmission. For example, if a woman with “Big Three Positive” hepatitis B becomes pregnant and does not receive appropriate antiviral prophylaxis or immunoprophylaxis, her newborn’s risk of contracting hepatitis B is significantly higher—many times greater—than that of infants born to healthy mothers. “Big Three Positive” hepatitis B can be transmitted via blood—particularly through broken skin or mucous membranes—as well as through sexual contact and sharing needles during intravenous drug use.
The term “Big Three-Positive” (or “Triple-Positive”) refers to a serological profile commonly observed in patients with chronic hepatitis B or in asymptomatic hepatitis B virus (HBV) carriers. It indicates positivity for three specific HBV immunological markers: hepatitis B surface antigen (HBsAg), hepatitis B e-antigen (HBeAg), and hepatitis B core antibody (anti-HBc). A positive result for all three markers typically suggests active viral replication within the body. So, is “Big Three-Positive” hepatitis B contagious? Let’s explore this further below.
Is “Big Three-Positive” Hepatitis B Contagious?
Hepatitis B is an infectious disease transmitted primarily through blood exposure, mother-to-child (vertical) transmission, and sexual contact. For example, if a woman with “Big Three-Positive” hepatitis B becomes pregnant and does not receive appropriate antiviral prophylaxis or other preventive interventions during pregnancy and delivery, her newborn’s risk of contracting HBV is significantly higher—many times greater—than that of infants born to mothers without HBV infection. Individuals with “Big Three-Positive” hepatitis B can transmit the virus via blood—especially through broken skin or mucous membranes—as well as through sexual contact, sharing needles (e.g., among people who inject drugs), or accidental needle-stick injuries. Transmission risk increases substantially when both individuals have open wounds, abrasions, or ulcers on their skin or mucous membranes. To prevent infection, avoid sharing personal items such as toothbrushes, towels, or razors with someone diagnosed with “Big Three-Positive” hepatitis B.
Women with “Big Three-Positive” hepatitis B should undergo preconception counseling and receive appropriate antiviral intervention prior to pregnancy to prevent vertical transmission to their babies.
Patients with “Big Three-Positive” hepatitis B and high HBV DNA viral load require antiviral therapy. Commonly prescribed oral antiviral agents include entecavir, tenofovir disoproxil fumarate, lamivudine, and adefovir dipivoxil. Before initiating treatment, clinicians must thoroughly discuss the importance of strict adherence with patients: discontinuation of antiviral therapy may trigger rapid viral rebound, potentially leading to severe clinical consequences—including hepatic decompensation or acute-on-chronic liver failure. Patients must be clearly informed about this critical point. Additionally, treatment costs vary depending on individual circumstances and family financial capacity.
1. Maintain dietary control: avoid cold or raw foods, alcohol, and spicy or highly irritating foods.
2. Ensure adequate rest; avoid excessive physical exertion and fatigue.
3. Maintain emotional stability and mental calmness; avoid psychological stress or emotional trauma.
4. Ensure balanced nutrition; consume ample vegetables, fruits, and other vitamin-rich foods.
We hope the above information is helpful to you.
