Difference between revisions of "Tropical Viruses"
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Chikungunya Virus | Chikungunya Virus | ||
| − | Zika Virus | + | Zika Virus, also see [[Zika Virus]] |
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==Acceptability at Recruitment== | ==Acceptability at Recruitment== | ||
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==Explanation of Condition== | ==Explanation of Condition== | ||
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| − | Chikungunya Virus''' | + | '''Chikungunya Virus''' |
Chikungunya is an alpha virus that can cause a wide spectrum of disease. This may range from no or minimal symptoms to death. Most commonly it causes arthritis (typically in the knee, ankle and small joints of the extremities), high fever and a maculopapular rash. It is geographically widespread but since 2005 it has reached epidemic proportions in parts of India and islands in the Indian Ocean. It is known to be spread by blood in symptomatic cases and on theoretical grounds could be spread by transfusion and transplantation of tissues and organs from people with pre-symptomatic or asymptomatic disease. A number of visitors returning from endemic areas to the UK have been diagnosed with this infection. | Chikungunya is an alpha virus that can cause a wide spectrum of disease. This may range from no or minimal symptoms to death. Most commonly it causes arthritis (typically in the knee, ankle and small joints of the extremities), high fever and a maculopapular rash. It is geographically widespread but since 2005 it has reached epidemic proportions in parts of India and islands in the Indian Ocean. It is known to be spread by blood in symptomatic cases and on theoretical grounds could be spread by transfusion and transplantation of tissues and organs from people with pre-symptomatic or asymptomatic disease. A number of visitors returning from endemic areas to the UK have been diagnosed with this infection. | ||
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ACCEPTABLE - May donate if more than 4 weeks from a donor's return from a Tropical Virus Risk area, and the donor has had neither symptoms nor evidence of infection | ACCEPTABLE - May donate if more than 4 weeks from a donor's return from a Tropical Virus Risk area, and the donor has had neither symptoms nor evidence of infection | ||
| − | + | DEFER - If it is less than six months from a donor's return from a Tropical Virus Risk endemic area and the donor has been diagnosed or has a history of symptoms suggestive of a tropical virus infection whilst there or following their return to the UK. This period may be shortened at the discretion of the transplant centre following discussion. | |
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| + | See also [[Zika Virus]] Donors are excluded from donation if they have had sex less than 28 days ago with someone who has had a confirmed Zika Virus infection in the 3 months preceding the sexual contact | ||
| − | Where NAT testing is available this | + | '''Where NAT testing is available''' this can be undertaken in discussion with MO and TC if it is i) less than 4 weeks from a donor's return from a tropical virus endemic area ii) less than 6 months from a donors return and they have a history of symptoms suggestive of a tropical virus. |
===Version=== | ===Version=== | ||
Version 1.0 | Version 1.0 | ||
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9 June 2016 | 9 June 2016 | ||
Latest revision as of 16:53, 7 January 2021
Contents
Definition
Dengue Virus
Chikungunya Virus
Zika Virus, also see Zika Virus
Acceptability at Recruitment
QUALIFIED - see below
Acceptability at CT / Work-Up
QUALIFIED - see below
Individual at Risk
Recipient
Explanation of Condition
Chikungunya Virus
Chikungunya is an alpha virus that can cause a wide spectrum of disease. This may range from no or minimal symptoms to death. Most commonly it causes arthritis (typically in the knee, ankle and small joints of the extremities), high fever and a maculopapular rash. It is geographically widespread but since 2005 it has reached epidemic proportions in parts of India and islands in the Indian Ocean. It is known to be spread by blood in symptomatic cases and on theoretical grounds could be spread by transfusion and transplantation of tissues and organs from people with pre-symptomatic or asymptomatic disease. A number of visitors returning from endemic areas to the UK have been diagnosed with this infection.
Dengue Virus
Dengue Virus is a flavivirus that typically gives rise to abrupt high fever with a range of accompanying symptoms. Dengue fever (DF) is the most common arthropod borne disease worldwide. Dengue is currently considered endemic in approximately 128 countries. Overall, 15-90% of cases may have an asymptomatic course of infection, but clinical presentation varies with age group. However there is a risk of change in disease presentation and potential for increased incidence of more severe disease in older age groups due to cocirculation of different dengue types and emergence of new types in endemic areas patterns.
Zika virus
Zika virus is a flavivirus that is transmitted to humans through the bite of a carrier mosquito. Zika infection is a rapid acute infection that in the majority of cases is asymptomatic or has very mild general symptoms. A small number of cases may have more apparent symptoms but hospitalisation is rare. Zika infection may be mistaken for Chikungunya or Dengue infections as the virus often co-circulate.
Guidance
See www.transfusionguidelines.org for up-to-date guidance
The following applies to all tropical viruses
RECRUITMENT
ACCEPT - if more than 4 weeks from a donor's return from a Tropical Virus Risk area, and the donor has had neither symptoms nor evidence of infection
DEFER - for 6 months IF it is less than six months from a donor's return from a Tropical Virus endemic area and the donor has been diagnosed or has a history of symptoms suggestive of infection whilst there or following their return to the UK.
VT/WORK-UP
ACCEPTABLE - May donate if more than 4 weeks from a donor's return from a Tropical Virus Risk area, and the donor has had neither symptoms nor evidence of infection
DEFER - If it is less than six months from a donor's return from a Tropical Virus Risk endemic area and the donor has been diagnosed or has a history of symptoms suggestive of a tropical virus infection whilst there or following their return to the UK. This period may be shortened at the discretion of the transplant centre following discussion.
See also Zika Virus Donors are excluded from donation if they have had sex less than 28 days ago with someone who has had a confirmed Zika Virus infection in the 3 months preceding the sexual contact
Where NAT testing is available this can be undertaken in discussion with MO and TC if it is i) less than 4 weeks from a donor's return from a tropical virus endemic area ii) less than 6 months from a donors return and they have a history of symptoms suggestive of a tropical virus.
Version
Version 1.0
9 June 2016
