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<p>In the United Kingdom, testing for Zika virus is carried out in the Public Health
EnglandRare and Imported Pathogens Laboratory at Porton Down. In the event of a positive
result, the clinicians caring for the patient are informed immediately, as well as
local Public Health officials. The clinicians will be referred to the national guidance
for further advice on management and follow-up. The majority of people (roughly 80%)
infected do not have symptoms. For those with symptoms, <a href="http://ecdc.europa.eu/en/publications/_layouts/forms/Publication_DispForm.aspx?List=4f55ad51-4aed-4d32-b960-af70113dbb90&ID=1413"
target="_blank">Zika virus generally causes a mild, short-lived (2 to 7 days) illness</a>.</p><p>
</p><p>In the case of a pregnant woman, the guidance suggests referral to a fetal
medicine service for further assessment, including an ultrasound scan. Samples will
also be tested for other infections prevalent in the geographical region that the
patient has visited, and which may present with similar symptoms, such as dengue.</p><p>
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