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Treatment of Hep B

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"Hepatitis B, Chronic"[MeSH Terms] AND treatment

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WHO 2024 hepatitis B chronic treatment guidelines tenofovir entecavir

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https://www.who.int/publications/i/item/9789240090903

Treatment of hepatitis B

Treatment depends on whether infection is acute or chronic.

1. Acute hepatitis B

Most adults clear acute HBV infection spontaneously. There is no routine antiviral treatment.
Management
  • Rest, adequate fluids and nutrition
  • Avoid alcohol and unnecessary/hepatotoxic drugs, including excessive acetaminophen
  • Treat nausea, vomiting, and dehydration if present
  • Monitor liver tests, INR, bilirubin, and signs of liver failure
Urgent hospital/hepatology referral is needed for confusion, bleeding, severe jaundice, ascites, worsening INR, or acute liver failure. Antivirals may be considered in severe or protracted acute hepatitis B under specialist care. WHO guidance supports symptomatic care for uncomplicated acute infection.

2. Chronic hepatitis B

The aim is long-term suppression of HBV DNA, normalization of ALT, prevention of cirrhosis and liver cancer, and prevention of transmission. Current drugs usually control rather than eradicate HBV because viral cccDNA remains in liver cells. Katzung's Basic and Clinical Pharmacology, 16th Edition, p. 1373.

First-line antivirals

  • Tenofovir disoproxil fumarate (TDF)
  • Tenofovir alafenamide (TAF)
  • Entecavir
These are potent oral drugs with a high barrier to resistance. WHO names tenofovir or entecavir as chronic HBV treatment options in its hepatitis B fact sheet.
Choice considerations
  • TDF: preferred in pregnancy and commonly used for HBV-HIV coinfection, but renal function and bone health need monitoring.
  • TAF: may be preferable if renal or bone toxicity is a concern.
  • Entecavir: effective option, but should not be used alone in untreated HIV coinfection because it can select HIV resistance.
Older drugs such as lamivudine, adefovir, and telbivudine are generally avoided when better alternatives are available due to resistance or toxicity.

Who usually needs treatment?

A clinician uses:
  • HBV DNA level
  • ALT level
  • HBeAg status
  • Evidence of fibrosis/cirrhosis, by elastography or other assessment
  • Age, family history of liver cancer, and coinfections such as HIV, HCV, or HDV
  • Pregnancy and planned immunosuppression
People with cirrhosis and detectable HBV DNA generally require treatment. Others are commonly treated when viral load and ALT are persistently elevated, or when clinically important fibrosis is present. WHO’s 2024 guideline expanded and simplified eligibility, including for adolescents and pregnant women. See the WHO 2024 HBV guideline.

Interferon

Pegylated interferon alfa is sometimes used in selected patients without cirrhosis who have a greater chance of finite-course treatment response. It has more adverse effects and is contraindicated in pregnancy and decompensated cirrhosis.

3. Pregnancy and prevention of mother-to-child transmission

  • All pregnant patients should have HBsAg testing.
  • If maternal HBV DNA is high, tenofovir in late pregnancy may be advised by the obstetric/hepatology team.
  • Every exposed newborn needs hepatitis B vaccine plus HBIG as soon as possible after birth, ideally within 12 hours, followed by completion of the vaccine series.

4. Monitoring

Before and during therapy, monitoring typically includes:
  • ALT/AST, bilirubin, albumin, INR
  • HBV DNA and HBeAg/anti-HBe where relevant
  • Kidney function and phosphate with tenofovir
  • Assessment for cirrhosis
  • Liver ultrasound surveillance, with or without AFP, for people at elevated risk of hepatocellular carcinoma
Treatment is often long term, sometimes lifelong, especially with cirrhosis. Do not stop antivirals without a liver specialist, as severe hepatitis flares can occur.

5. Prevent transmission

  • Vaccinate household and sexual contacts after testing.
  • Use condoms until partners are confirmed immune.
  • Do not share needles, razors, toothbrushes, or blood-contaminated items.
  • Avoid alcohol, particularly if liver inflammation or fibrosis is present.
Recent systematic reviews are exploring functional-cure and therapeutic-vaccine approaches, but these are not standard replacements for tenofovir or entecavir. PMIDs: 40528088, 39213251.

Give me PDF of Hepatities B

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WHO hepatitis B fact sheet chronic hepatitis B treatment prevention 2024

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mkdir -p "/tmp/workspace/hepatitis-b-pdf/output" && python - <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.lib import colors from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.enums import TA_CENTER from reportlab.lib.units import cm from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, PageBreak, KeepTogether from reportlab.pdfbase.ttfonts import TTFont from reportlab.pdfbase import pdfmetrics from reportlab.lib.colors import HexColor from reportlab.pdfbase.pdfmetrics import stringWidth out='/tmp/workspace/hepatitis-b-pdf/output/Hepatitis_B_Guide.pdf' doc=SimpleDocTemplate(out,pagesize=A4,rightMargin=1.55*cm,leftMargin=1.55*cm,topMargin=1.45*cm,bottomMargin=1.4*cm) styles=getSampleStyleSheet() styles.add(ParagraphStyle(name='Title2',parent=styles['Title'],fontName='Helvetica-Bold',fontSize=23,leading=28,textColor=HexColor('#123B5D'),alignment=TA_CENTER,spaceAfter=8)) styles.add(ParagraphStyle(name='Sub',parent=styles['Normal'],fontName='Helvetica',fontSize=10.5,leading=14,textColor=HexColor('#3B566D'),alignment=TA_CENTER,spaceAfter=16)) styles.add(ParagraphStyle(name='H1x',parent=styles['Heading1'],fontName='Helvetica-Bold',fontSize=15,leading=19,textColor=HexColor('#0D5B78'),spaceBefore=10,spaceAfter=6)) styles.add(ParagraphStyle(name='Bodyx',parent=styles['BodyText'],fontName='Helvetica',fontSize=10.3,leading=14.2,spaceAfter=6)) styles.add(ParagraphStyle(name='Small',parent=styles['BodyText'],fontName='Helvetica',fontSize=8.6,leading=11,textColor=HexColor('#425466'))) styles.add(ParagraphStyle(name='Box',parent=styles['BodyText'],fontName='Helvetica',fontSize=10,leading=14,textColor=HexColor('#16364A'))) def P(t,style='Bodyx'): return Paragraph(t, styles[style]) def bullets(items): return [P('&bull; '+x) for x in items] def box(title,text,bg='#EAF5F8'): return Table([[P('<b>'+title+'</b><br/>'+text,'Box')]],colWidths=[17.8*cm],style=TableStyle([('BACKGROUND',(0,0),(-1,-1),HexColor(bg)),('BOX',(0,0),(-1,-1),0.6,HexColor('#8FB8C9')),('LEFTPADDING',(0,0),(-1,-1),10),('RIGHTPADDING',(0,0),(-1,-1),10),('TOPPADDING',(0,0),(-1,-1),8),('BOTTOMPADDING',(0,0),(-1,-1),8)])) story=[] story += [P('Hepatitis B','Title2'),P('A concise guide to infection, testing, treatment and prevention','Sub'),box('Important','This guide is for education. A clinician should interpret your blood tests and decide whether you need medicine. Seek urgent medical care for confusion, severe sleepiness, vomiting blood, black stools, severe abdominal swelling, or rapidly worsening jaundice.','#FFF3E3'),Spacer(1,10)] story += [P('What is hepatitis B?','H1x'),P('Hepatitis B is a viral infection that affects the liver. It can be short-term (acute) or persist for more than 6 months (chronic). Chronic infection can cause liver scarring (cirrhosis), liver failure, and liver cancer, but regular follow-up and antiviral treatment can greatly reduce these risks.')] story += [P('How it spreads','H1x')] + bullets(['Contact with infected blood or body fluids, including unprotected sex and sharing needles or razors.','From mother to baby around birth.','It is <b>not</b> spread by sharing food, hugging, coughing, or ordinary casual contact.']) story += [P('Tests you may need','H1x')] data=[[P('<b>Test</b>','Small'),P('<b>Why it is done</b>','Small')],[P('HBsAg','Small'),P('Shows current HBV infection when positive.','Small')],[P('Anti-HBs and anti-HBc','Small'),P('Help show immunity, past infection, or vaccine response.','Small')],[P('HBV DNA (viral load)','Small'),P('Measures viral replication and helps guide treatment.','Small')],[P('ALT/AST and liver function tests','Small'),P('Assess liver inflammation and function.','Small')],[P('Elastography or ultrasound','Small'),P('Checks for fibrosis/cirrhosis and, in at-risk people, screens for liver cancer.','Small')]] story.append(Table(data,colWidths=[4.2*cm,13.6*cm],style=TableStyle([('BACKGROUND',(0,0),(-1,0),HexColor('#DDEEF4')),('GRID',(0,0),(-1,-1),0.35,HexColor('#AFC7D1')),('VALIGN',(0,0),(-1,-1),'TOP'),('LEFTPADDING',(0,0),(-1,-1),6),('RIGHTPADDING',(0,0),(-1,-1),6),('TOPPADDING',(0,0),(-1,-1),5),('BOTTOMPADDING',(0,0),(-1,-1),5)]))) story += [P('Treatment','H1x'),P('<b>Acute hepatitis B:</b> Most people recover without antivirals. Care usually includes fluids, good nutrition, avoiding alcohol and medicines that can injure the liver unless prescribed, and medical follow-up.'),P('<b>Chronic hepatitis B:</b> Not everyone needs medicine immediately. The decision depends on HBV DNA, ALT, HBeAg, fibrosis/cirrhosis, age, pregnancy, and HIV, HCV, or HDV coinfection. People with cirrhosis generally need antiviral therapy if HBV DNA is detectable.')] story.append(box('Common first-line medicines','Oral <b>tenofovir</b> (TDF or TAF) or <b>entecavir</b> suppress HBV replication. Treatment is often long-term, and many people require lifelong therapy. Do not stop a hepatitis B antiviral without a liver specialist because severe flares can occur.')) story += [P('Monitoring during care','H1x')] + bullets(['Attend scheduled blood tests for liver enzymes and HBV DNA.','If taking tenofovir, kidney function and bone health may need monitoring.','Some people need ultrasound surveillance for liver cancer every 6 months, especially with cirrhosis or other high-risk features.','Test for HIV, hepatitis C, and hepatitis D when advised.']) story += [P('Pregnancy and newborn protection','H1x'),P('Pregnant people should be tested for HBsAg. If the viral load is high, a clinician may recommend tenofovir late in pregnancy. Babies born to an infected mother should receive hepatitis B vaccine and hepatitis B immune globulin (HBIG) as soon as possible, ideally within 12 hours of birth, then complete the vaccine series.')] story += [P('Protect others and protect your liver','H1x')] + bullets(['Ensure household members and sexual partners are tested and vaccinated if not immune.','Use condoms until a partner is known to be immune. Do not share needles, razors, toothbrushes, or injection equipment.','Avoid alcohol. Discuss all prescription, over-the-counter, and herbal medicines with your clinician.','Get vaccinated if you are not infected and not immune. The hepatitis B vaccine is highly effective.']) story += [Spacer(1,8),box('Sources','World Health Organization, <i>Hepatitis B</i> fact sheet and <i>Guidelines for the prevention, diagnosis, care and treatment for people with chronic hepatitis B infection</i> (2024). Textbook reference: <i>Katzung\'s Basic and Clinical Pharmacology</i>, 16th ed., p. 1373.','#F4F7F8'),Spacer(1,6),P('Prepared: 17 September 2026.','Small')] def footer(canvas,doc): canvas.saveState(); canvas.setStrokeColor(HexColor('#BBD5DE'));canvas.line(1.55*cm,1.05*cm,19.45*cm,1.05*cm);canvas.setFont('Helvetica',8);canvas.setFillColor(HexColor('#566B78'));canvas.drawString(1.55*cm,.72*cm,'Hepatitis B Guide | Educational use');canvas.drawRightString(19.45*cm,.72*cm,f'Page {doc.page}');canvas.restoreState() doc.build(story,onFirstPage=footer,onLaterPages=footer) print(out) PY python - <<'PY' from pypdf import PdfReader p='/tmp/workspace/hepatitis-b-pdf/output/Hepatitis_B_Guide.pdf' r=PdfReader(p) text=''.join(page.extract_text() or '' for page in r.pages) print('pages=',len(r.pages),'chars=',len(text),'has treatment=', 'Treatment' in text) PY

Hepatitis B Guide

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