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Editor, Senior Moderator
[h=1]Prevention of sexual transmission of Zika virus[/h] [h=2]Interim guidance[/h]
Print
Authors:
World Health Organization
[h=3]Publication details[/h] Number of pages: 5
Publication date: Updated 6 September 2016
Languages: English
WHO reference number: WHO /ZIKV /MOC/16. 1 Rev. 3
[h=3]Downloads[/h]
[h=3]Also available in[/h]
[h=3]Overview[/h] The primary transmission route of Zika virus is via the Aedes mosquito. However, mounting evidence has shown that sexual transmission of Zika virus is possible and more common than previously assumed. This is of concern due to an association between Zika virus infection and adverse pregnancy and fetal outcomes, including microcephaly, neurological complications and Guillain-Barr? syndrome.
The current evidence base on Zika virus remains limited. This guidance will be reviewed and the recommendations updated as new evidence emerges.
[h=4]Related links[/h]
http://who.int/csr/resources/publications/zika/sexual-transmission-prevention/en/
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Excerpt:
Prevention of sexual transmission of Zika virus
Interim guidance update
6 September 2016
WHO/ZIKV/MOC/16.1 Rev.3
1. Introduction
1.1 Background
This document is an update of guidance published on 7
June 2016 to provide advice on the prevention of sexual
transmission of Zika virus.
The primary transmission route of Zika virus is via the
Aedes mosquito. However, mounting evidence has shown
that sexual transmission of Zika virus is possible and more
common than previously assumed.
1 This is of concern due
to an association between Zika virus infection and adverse
pregnancy and fetal outcomes, including microcephaly,
neurological complications and Guillain-Barr? syndrome.
This review comprises recent evidence on sexual
transmission of Zika virus which includes sexual
transmission from
Asymptomatic males to their female partners,
Symptomatic female to her male partner,
Longer shedding of Zika virus in semen.
Based on this new evidence, the recommended length of
time for safer sex practices for asymptomatic males
returning from areas with active Zika virus transmission
was extended from 8 weeks to 6 months. This is the same
length of time as is recommended for symptomatic males.
This recommendation now also applies to females, whether
or not they have had symptoms. The 6 month duration of
safer sexual practice upon return has not changed. (Please
see footnote c).
The current evidence on persistence of Zika virus in semen,
its infectiousness and impact on sexual transmission
remains limited. This guidance will be reviewed and the
recommendations updated as new evidence emerges.
...
2. Sexual transmission of Zika virus
2.1 Current evidence
2.1.1 Summary of publications
As of 26 August 2016, a total of 17 studies or reports have
been published on sexual transmission of Zika virus,
including the following:
? Seven studies on symptomatic male to female
transmission2-8
? One study on male to male transmission9
? One study on female to male transmission10
? Two studies on asymptomatic male to female
transmission11-12
? Four case-reports reported by International Health
Regulations National Focal Points13-16
? Two case-reports described through government/news
media17-18
In addition, eight studies have been published on the
presence of Zika virus in semen.
19-26
...
Authors:
World Health Organization
[h=3]Publication details[/h] Number of pages: 5
Publication date: Updated 6 September 2016
Languages: English
WHO reference number: WHO /ZIKV /MOC/16. 1 Rev. 3
[h=3]Downloads[/h]
[h=3]Also available in[/h]
[h=3]Overview[/h] The primary transmission route of Zika virus is via the Aedes mosquito. However, mounting evidence has shown that sexual transmission of Zika virus is possible and more common than previously assumed. This is of concern due to an association between Zika virus infection and adverse pregnancy and fetal outcomes, including microcephaly, neurological complications and Guillain-Barr? syndrome.
The current evidence base on Zika virus remains limited. This guidance will be reviewed and the recommendations updated as new evidence emerges.
[h=4]Related links[/h]
http://who.int/csr/resources/publications/zika/sexual-transmission-prevention/en/
----------------------------------------------------------------------------------------------------------------------------
Excerpt:
Prevention of sexual transmission of Zika virus
Interim guidance update
6 September 2016
WHO/ZIKV/MOC/16.1 Rev.3
1. Introduction
1.1 Background
This document is an update of guidance published on 7
June 2016 to provide advice on the prevention of sexual
transmission of Zika virus.
The primary transmission route of Zika virus is via the
Aedes mosquito. However, mounting evidence has shown
that sexual transmission of Zika virus is possible and more
common than previously assumed.
1 This is of concern due
to an association between Zika virus infection and adverse
pregnancy and fetal outcomes, including microcephaly,
neurological complications and Guillain-Barr? syndrome.
This review comprises recent evidence on sexual
transmission of Zika virus which includes sexual
transmission from
Asymptomatic males to their female partners,
Symptomatic female to her male partner,
Longer shedding of Zika virus in semen.
Based on this new evidence, the recommended length of
time for safer sex practices for asymptomatic males
returning from areas with active Zika virus transmission
was extended from 8 weeks to 6 months. This is the same
length of time as is recommended for symptomatic males.
This recommendation now also applies to females, whether
or not they have had symptoms. The 6 month duration of
safer sexual practice upon return has not changed. (Please
see footnote c).
The current evidence on persistence of Zika virus in semen,
its infectiousness and impact on sexual transmission
remains limited. This guidance will be reviewed and the
recommendations updated as new evidence emerges.
...
2. Sexual transmission of Zika virus
2.1 Current evidence
2.1.1 Summary of publications
As of 26 August 2016, a total of 17 studies or reports have
been published on sexual transmission of Zika virus,
including the following:
? Seven studies on symptomatic male to female
transmission2-8
? One study on male to male transmission9
? One study on female to male transmission10
? Two studies on asymptomatic male to female
transmission11-12
? Four case-reports reported by International Health
Regulations National Focal Points13-16
? Two case-reports described through government/news
media17-18
In addition, eight studies have been published on the
presence of Zika virus in semen.
19-26
...