Hepatitis B secondary prevention: Difference between revisions

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==Overview==
==Overview==
Hepatitis B Immunoglobulin (HBIG) is a form of passive [[immunization]] when given shortly before, or soon after exposure to [[hepatitis B virus]]. It is also administered in combination with HBV [[vaccines]] to newborns of [[HBsAg]] positive mothers.
Hepatitis B Immunoglobulin (HBIG) is a form of passive [[immunization]] when given shortly before or soon after exposure to [[hepatitis B virus]]. It is also administered in combination with HBV [[vaccines]] to the newborns of [[HBsAg]] positive mothers.<ref name=WHO-Guideline-Hepatitis-B> World Health Organization, Guidelines for the Prevention, Care, and Treatment of persons with chronic Hepatitis B Infection. (March 2015). http://apps.who.int/iris/bitstream/10665/154590/1/9789241549059_eng.pdf Accessed on October 4th, 2016</ref><ref name=MMWR-Hepatitis> Centers for Disease Control and Prevention. Prevention and Control of Infections with Hepatitis Viruses in Correctional Settings http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5201a1.htm  Accessed on October 4th 2016</ref>


==Secondary Prevention==
==Secondary Prevention==
===Hepatitis B Immunoglobulin===
===Hepatitis B Immunoglobulin===
HBIG provides passively acquired anti-HBs and temporary protection (3-6 months) when administered in standard doses. HBIG is typically used as an adjunct to [[hepatitis B vaccine]] for postexposure immunoprophylaxis to prevent HBV infection. HBIG administered alone is the primary means of protection after an HBV exposure for nonresponders to hepatitis B vaccination.
HBIG provides passively acquired anti-HBs and temporary protection (3-6 months) when administered in standard doses. HBIG is typically used as an adjunct to [[hepatitis B vaccine]] for postexposure [[immunoprophylaxis]] to prevent HBV infection. HBIG administered alone is the primary means of protection after an HBV exposure for nonresponders to [[Hepatitis B vaccine|hepatitis B vaccination]].<ref name=WHO-Guideline-Hepatitis-B> World Health Organization, Guidelines for the Prevention, Care, and Treatment of persons with chronic Hepatitis B Infection. (March 2015). http://apps.who.int/iris/bitstream/10665/154590/1/9789241549059_eng.pdf Accessed on October 4th, 2016</ref><ref name=MMWR-Hepatitis> Centers for Disease Control and Prevention. Prevention and Control of Infections with Hepatitis Viruses in Correctional Settings http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5201a1.htm  Accessed on October 4th 2016</ref>


HBIG is similar to conventional IG preparations except that it is prepared from plasma preselected for a high titre of anti-HBs (>100 000 IU/ml of anti-HBs). The [[plasma]] is screened to eliminate donors who are positive for [[HBsAg]], antibodies to [[HIV]] and [[hepatitis C virus]] (HCV), and HCV [[RNA]]:<ref name=WHO1>{{cite web | title = Hepatitis B | url = http://www.who.int/csr/disease/hepatitis/whocdscsrlyo20022/en/index3.html }}</ref>
HBIG is similar to conventional IG preparations except that it is prepared from [[plasma]] preselected for a high titre of anti-HBs (>100 000 IU/ml of anti-HBs). The [[plasma]] is screened to eliminate donors who are positive for [[HBsAg]], antibodies to [[HIV]] and [[hepatitis C virus]] (HCV), and HCV [[RNA]]:<ref name=WHO-Guideline-Hepatitis-B> World Health Organization, Guidelines for the Prevention, Care, and Treatment of persons with chronic Hepatitis B Infection. (March 2015). http://apps.who.int/iris/bitstream/10665/154590/1/9789241549059_eng.pdf Accessed on October 4th, 2016</ref>
* HBIG protects by passive [[immunization]] if given shortly before or soon after exposure to [[HBV]].
* HBIG protects by passive [[immunization]] if given shortly before or soon after exposure to [[HBV]].
* The protection is immediate, but it lasts only 3 to 6 months.
* The protection is immediate, but it lasts only 3 to 6 months.
* HBIG is not recommended as pre-exposure [[prophylaxis]] because of high cost, limited availability, and short-term effectiveness. HBIG is generally not affordable in developing countries.
* HBIG is not recommended as pre-exposure [[prophylaxis]] because of high cost, limited availability, and short-term effectiveness. HBIG is generally not affordable in developing countries.
* HBIG should be given to adults within 48 hours of [[HBV]] exposure.
* Maternal-neonatal [[transmission]] of HBV and the subsequent development of chronic hepatitis B in infected children is reduced drastically when HBIG is given to the newborn babies of HBV carrier mothers in conjunction with the first dose of the HB vaccine.


* HBIG should be given to adults within 48 h of HBV exposure.
* Maternal-neonatal [[transmission]] of HBV and the subsequent development of chronic hepatitis B in infected children has been reduced drastically, when HBIG was given to newborn babies of HBV carrier mothers in conjunction with the first dose of HB vaccine.


[[File:Spectrum of liver disease after HBV infectionSpectrum of liver disease after HBV infection2.png|thumb|center|950px|Postexposure prophylaxis algorythm <SMALL> Adapted from ''[http://www.who.int/en/ World Health Organization]''<ref>{{Cite web | title = http://www.who.int/en/ | url = http://www.who.int/en/}}</ref></SMALL>]]
[[File:Prophylaxis Algorythm.png|thumb|center|800px|Postexposure prophylaxis algorythm <SMALL> Adapted from ''[http://www.who.int/en/ World Health Organization]''<ref>{{Cite web | title = WHO | url = http://www.who.int/en/}}</ref></SMALL>]]


==Summary of Recommendations for Counseling and Prevention of Transmission of Hepatitis B from Individuals with Chronic HBV Infection: AASLD Practice Guidelines 2009<ref name="pmid15229781">{{cite journal |author=Lok AS, McMahon BJ |title=[AASLD Practice Guidelines. Chronic hepatitis B: update of therapeutic guidelines] |journal=[[Romanian Journal of Gastroenterology]] |volume=13 |issue=2 |pages=150–4 |year=2004 |month=June |pmid=15229781 |doi= |url=http://www.aasld.org/practiceguidelines/documents/bookmarked%20practice%20guidelines/chronic_hep_b_update_2009%208_24_2009.pdf |accessdate=2012-02-10}}</ref>==
==Summary of Recommendations for Counseling and Prevention of Transmission of Hepatitis B from Individuals with Chronic HBV Infection: AASLD Practice Guidelines <ref name=Hepatology> AASLD guidelines for treatment of chronic hepatitis B. Hepatology (2016)http://onlinelibrary.wiley.com/doi/10.1002/hep.28156/full Accessed on October 10th, 2016</ref>==
{|class="wikitable" width="80%"
{|class="wikitable" width="80%"
|-
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| colspan="1" style="text-align:center; background:LightGreen"|[[AASLD guidelines classification scheme#Classification of Recommendations|Class I]]
| colspan="1" style="text-align:center; background:LightGreen"|[[AASLD guidelines classification scheme#Classification of Recommendations|Class I]]
|-
|-
| bgcolor="LightGreen"|<nowiki>"</nowiki>'''1.''' Newborns of HBV-infected mothers should receive HBIG and hepatitis B vaccine at delivery and
| bgcolor="LightGreen"|<nowiki>"</nowiki>'''1.''' Newborns of HBV-infected mothers should receive HBIG and hepatitis B vaccine at delivery and complete the recommended vaccination series.<nowiki>"</nowiki>
complete the recommended vaccination series.<nowiki>"</nowiki>
|-
|-
|}
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==References==
==References ==  
{{Reflist|2}}
{{Reflist|2}}
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[[Category:Emergency mdicine]]
[[Category:Disease]]
[[Category:Disease]]
{{WH}}
[[Category:Up-To-Date]]
{{WS}}
[[Category:Infectious disease]]
[[Category:Hepatology]]

Latest revision as of 22:05, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]

Overview

Hepatitis B Immunoglobulin (HBIG) is a form of passive immunization when given shortly before or soon after exposure to hepatitis B virus. It is also administered in combination with HBV vaccines to the newborns of HBsAg positive mothers.[1][2]

Secondary Prevention

Hepatitis B Immunoglobulin

HBIG provides passively acquired anti-HBs and temporary protection (3-6 months) when administered in standard doses. HBIG is typically used as an adjunct to hepatitis B vaccine for postexposure immunoprophylaxis to prevent HBV infection. HBIG administered alone is the primary means of protection after an HBV exposure for nonresponders to hepatitis B vaccination.[1][2]

HBIG is similar to conventional IG preparations except that it is prepared from plasma preselected for a high titre of anti-HBs (>100 000 IU/ml of anti-HBs). The plasma is screened to eliminate donors who are positive for HBsAg, antibodies to HIV and hepatitis C virus (HCV), and HCV RNA:[1]

  • HBIG protects by passive immunization if given shortly before or soon after exposure to HBV.
  • The protection is immediate, but it lasts only 3 to 6 months.
  • HBIG is not recommended as pre-exposure prophylaxis because of high cost, limited availability, and short-term effectiveness. HBIG is generally not affordable in developing countries.
  • HBIG should be given to adults within 48 hours of HBV exposure.
  • Maternal-neonatal transmission of HBV and the subsequent development of chronic hepatitis B in infected children is reduced drastically when HBIG is given to the newborn babies of HBV carrier mothers in conjunction with the first dose of the HB vaccine.


Postexposure prophylaxis algorythm Adapted from World Health Organization[3]

Summary of Recommendations for Counseling and Prevention of Transmission of Hepatitis B from Individuals with Chronic HBV Infection: AASLD Practice Guidelines [4]

Class I
"1. Newborns of HBV-infected mothers should receive HBIG and hepatitis B vaccine at delivery and complete the recommended vaccination series."
Class IIb
"2. Persons who are positive only for anti-HBc and who are from a low endemic area with no risk factors for HBV should be given the full series of hepatitis B vaccine."
Class III
"3. Carriers should be counseled regarding prevention of transmission of HBV."
Class III
"4. Sexual and household contacts of carriers who are negative for HBV seromarkers should receive hepatitis B vaccination."
Class III
"5. Persons who remain at risk for HBV infection such as infants of HBsAg-positive mothers, health care workers, dialysis patients, and sexual partners of carriers should be tested for response to vaccination.
  • Postvaccination testing should be performed at 9 to 15 months of age in infants of carrier mothers and 1-2 months after the last dose in other persons.
  • Follow-up testing of vaccine responders is recommended annually for chronic hemodialysis patients."
Class III
"6. Abstinence or only limited use of alcohol is recommended in hepatitis B carriers."

References

  1. ↑ 1.0 1.1 1.2 World Health Organization, Guidelines for the Prevention, Care, and Treatment of persons with chronic Hepatitis B Infection. (March 2015). http://apps.who.int/iris/bitstream/10665/154590/1/9789241549059_eng.pdf Accessed on October 4th, 2016
  2. ↑ 2.0 2.1 Centers for Disease Control and Prevention. Prevention and Control of Infections with Hepatitis Viruses in Correctional Settings http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5201a1.htm Accessed on October 4th 2016
  3. ↑ "WHO".
  4. ↑ AASLD guidelines for treatment of chronic hepatitis B. Hepatology (2016)http://onlinelibrary.wiley.com/doi/10.1002/hep.28156/full Accessed on October 10th, 2016


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