Chickenpox primary prevention: Difference between revisions

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==Overview==
== Overview==
[[Vaccination]] is recommended for children as well as adults who have not been [[Vaccination|vaccinated]] previously to prevent [[chickenpox]]. Two doses of [[Varicella vaccine|chickenpox vaccine]] are recommended for children who never have contracted [[chickenpox]].The first dose is recommended between 12-15 months of age. The second dose is recommended around 4-6 years of age and also it may be given earlier if the gap between the doses is at least three months from the first dose. In [[Adolescent|adolescents]] and [[Adult|adults]], a [[vaccine]] is recommended for people who are 13 years of age or older. There should be a gap of at least 28 days between the two doses.


==Vaccination==
==Primary Prevention==
{{main|Varicella vaccine}}
===Vaccination===
A [[varicella vaccine]] has been available since 1995 to inoculate against the disease.  Some countries require the varicella vaccination or an exemption before entering elementary school.  Protection is not lifelong and further vaccination is necessary five years after the initial immunization.<!--
  --><ref>{{cite journal | author=Chaves SS, Gargiullo P, Zhang JX, ''et al.'' | title=Loss of vaccine-induced immunity to varicella over time | journal=N Engl J Med | year=2007 | volume=356 | issue=11 | pages=1121&ndash;9 | id=PMID 17360990}}</ref>


In the UK, varicella antibodies are measured as part of the routine of prenatal care, and by 2005 all NHS healthcare personnel had determined their immunity and been immunised if they were non-immune and have direct patient contactPopulation-based immunization against varicella is not otherwise practiced in the UK, because of lack of evidence of lasting efficacy or public health benefit.
A [[varicella vaccine]] has been available since 1995 to [[Inoculation|inoculate]] against the [[disease]]Some countries require the [[Varicella vaccine|varicella vaccination]] or an exemption before entering elementary school. Protection is not lifelong and further [[vaccination]] is necessary five years after the initial [[immunization]].<ref>{{cite journal | author=Chaves SS, Gargiullo P, Zhang JX, ''et al.'' | title=Loss of vaccine-induced immunity to varicella over time | journal=N Engl J Med | year=2007 | volume=356 | issue=11 | pages=1121&ndash;9 | id=PMID 17360990}}</ref>


'''Normal Reactions to vaccine are'''
* [[Chickenpox vaccine]] became available in the United States in 1995. In 2014, 91% of children 19 to 35 months old in the United States had received one dose of [[varicella vaccine]], varying from 83% to 95% by the state. Among [[Adolescent|adolescents]] 13 to 17 years of age without a prior history of the [[disease]], 95% had received 1 dose of [[varicella vaccine]], and 81% had received 2 doses of the vaccine. Eighty-five percent of adolescents had either a history of [[Chickenpox|varicella disease]] or received 2 doses of [[varicella vaccine]].
*Fever of 101.9 (38.9 C) up to 42 days after Injection
*Soreness, inching at the site of injection within 2 days
*Rash occurring at site of injection anywhere form 8 to 19 days after injection. If this happens you are considered contagious.
*Rash on other parts of body anywhere from 5 to 26 days after injection. If this happens you are considered contagious.
'''What to do should reaction occur'''
 
Control fever and lessen discomfort, take medication containing [[acetaminophen]], (AKA paracetamol) such as
*[[Panadol]],
*Tempra,
*[[Tylenol]].


{| align="center" style="border: 0px; font-size: 90%; margin: 3px;"
|+
! style="background: #4479BA; width: 150px;" | {{fontcolor|#FFF|Varicella containing vaccines}}
! style="background: #4479BA; width: 350px;" | {{fontcolor|#FFF|Indications}}
! style="background: #4479BA; width: 350px;" | {{fontcolor|#FFF|Efficacy and immunogenicity}}
! style="background: #4479BA; width: 350px;" | {{fontcolor|#FFF|Recommended dose}}
! style="background: #4479BA; width: 350px;" | {{fontcolor|#FFF|Contraindications}}
|-
| style="padding: 5px 5px; background: #DCDCDC;" | '''Varicella vaccine (Varivax)'''<ref name="CDC3">http://www.cdc.gov/vaccines/pubs/pinkbook/varicella.html Accessed on October 24, 2016</ref><ref>Centers for Disease Control and Prevention (CDC). Prevention of varicella: recommendations of the Advisory Committee on Immunization Practices (ACIP). MMWR 1996;45(No.RR-11)</ref><ref>{{cite journal | first=GS|last=Goldman| title=Universal varicella vaccination: efficacy trends and effect on herpes zoster | journal=International Journal of Toxicology| volume=24| issue=4 | year=2005 | pages=205-213 | id=PMID 16126614}}</ref><ref>{{cite journal | author = Brisson M, Gay N, Edmunds W, Andrews N | title = Exposure to varicella boosts immunity to herpes-zoster: implications for mass vaccination against chicken pox. | journal = Vaccine | volume = 20 | issue = 19-20 | pages = 2500-7 | year = 2002 | id = PMID 12057605}}</ref>
| style="padding: 5px 5px; background: #F5F5F5;" |
'''Children'''
*Routine [[vaccination]] at 12-15 months of age
*Routine second dose at 4-6 years of age
'''Adolescents and Adults'''
*All persons 13 years of age and older without evidence of [[Chickenpox|varicella]] [[immunity]]
| style="padding: 5px 5px; background: #F5F5F5;" |
*Detectable [[antibody]]
:*97% of children 12 months through 12 years following 1 dose
:*99% of persons 13 years and older after 2 doses
:*70% to 90% effective against any [[Chickenpox|varicella]] disease
:*90%-100% effective against severe [[Chickenpox|varicella]] disease
| style="padding: 5px 5px; background: #F5F5F5;" |
'''Children'''
*Minimum interval between doses of [[varicella vaccine]] is 3 months for children younger than 13 years of age
'''Adolescents and Adults'''
*2 doses separated by at least 4 weeks
*Do not repeat the first dose because of extended interval between doses
| style="padding: 5px 5px; background: #F5F5F5;" |
*Severe [[allergic reaction]] to [[vaccine]] component or following a prior dose
*[[Immunosuppression]]
*[[Pregnancy]]
*Moderate or severe acute illness
*Recent [[blood product]]
|-
| style="padding: 5px 5px; background: #DCDCDC;" |'''Measles-mumps-rubella-varicella vaccine (ProQuad)'''<ref name="CDC3">http://www.cdc.gov/vaccines/pubs/pinkbook/varicella.html Accessed on October 24, 2016</ref>
| style="padding: 5px 5px; background: #F5F5F5;" |
*Approved for children 12 months through 12 years
*It should not be used for persons 13 years and older
| style="padding: 5px 5px; background: #F5F5F5;" |
*Efficacy of [[MMRV vaccine]] was inferred from that of [[MMR vaccine]] and [[varicella vaccine]] on the basis of non-inferior [[immunogenicity]]
*Formal studies to evaluate the clinical efficacy of [[MMRV vaccine]] have not been performed<ref name="CDCmmrv">http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5903a1.htm Accessed on October 24, 2016</ref>
| style="padding: 5px 5px; background: #F5F5F5;" |
*May be used for both first and second doses of [[MMR]] and [[Varicella vaccine|varicella vaccines]]
*Minimum interval between doses is 3 months
| style="padding: 5px 5px; background: #F5F5F5;" |
*Severe [[allergic reaction]] to [[vaccine]] component or following a prior dose
*[[Immunosuppression]]
*[[Pregnancy]]
*Moderate or severe acute illness
*Recent [[blood product]]
*Personal or family (i.e., sibling or parent) history of [[Seizure|seizures]] of any etiology
|-
|}
==References==
==References==
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Latest revision as of 20:53, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Aysha Anwar, M.B.B.S[2]

Overview

Vaccination is recommended for children as well as adults who have not been vaccinated previously to prevent chickenpox. Two doses of chickenpox vaccine are recommended for children who never have contracted chickenpox.The first dose is recommended between 12-15 months of age. The second dose is recommended around 4-6 years of age and also it may be given earlier if the gap between the doses is at least three months from the first dose. In adolescents and adults, a vaccine is recommended for people who are 13 years of age or older. There should be a gap of at least 28 days between the two doses.

Primary Prevention

Vaccination

A varicella vaccine has been available since 1995 to inoculate against the disease. Some countries require the varicella vaccination or an exemption before entering elementary school. Protection is not lifelong and further vaccination is necessary five years after the initial immunization.[1]

Varicella containing vaccines Indications Efficacy and immunogenicity Recommended dose Contraindications
Varicella vaccine (Varivax)[2][3][4][5]

Children

  • Routine vaccination at 12-15 months of age
  • Routine second dose at 4-6 years of age

Adolescents and Adults

  • 97% of children 12 months through 12 years following 1 dose
  • 99% of persons 13 years and older after 2 doses
  • 70% to 90% effective against any varicella disease
  • 90%-100% effective against severe varicella disease

Children

  • Minimum interval between doses of varicella vaccine is 3 months for children younger than 13 years of age

Adolescents and Adults

  • 2 doses separated by at least 4 weeks
  • Do not repeat the first dose because of extended interval between doses
Measles-mumps-rubella-varicella vaccine (ProQuad)[2]
  • Approved for children 12 months through 12 years
  • It should not be used for persons 13 years and older
  • May be used for both first and second doses of MMR and varicella vaccines
  • Minimum interval between doses is 3 months

References

  1. Chaves SS, Gargiullo P, Zhang JX; et al. (2007). "Loss of vaccine-induced immunity to varicella over time". N Engl J Med. 356 (11): 1121&ndash, 9. PMID 17360990.
  2. 2.0 2.1 http://www.cdc.gov/vaccines/pubs/pinkbook/varicella.html Accessed on October 24, 2016
  3. Centers for Disease Control and Prevention (CDC). Prevention of varicella: recommendations of the Advisory Committee on Immunization Practices (ACIP). MMWR 1996;45(No.RR-11)
  4. Goldman, GS (2005). "Universal varicella vaccination: efficacy trends and effect on herpes zoster". International Journal of Toxicology. 24 (4): 205–213. PMID 16126614.
  5. Brisson M, Gay N, Edmunds W, Andrews N (2002). "Exposure to varicella boosts immunity to herpes-zoster: implications for mass vaccination against chicken pox". Vaccine. 20 (19–20): 2500–7. PMID 12057605.
  6. http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5903a1.htm Accessed on October 24, 2016


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