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Zika fever (also known as Zika virus disease and simply Zika) is an infectious disease caused by the Zika virus. Most cases have no symptoms, but when present they are usually mild and can resemble dengue fever. Symptoms may include fever, red eyes, joint pain, headache, and a maculopapular rash.
Symptoms of Zika virus infection. 1  low-grade fever (between 37.8Â°C and 38.5Â°C). 2  arthralgia, notably of small joints of hands and feet, with possible swollen joints. 3  myalgia. 4  headache, retro-ocular headaches. 5  conjunctivitis. 6  cutaneous maculopapular rash.7  post-infection asthenia which seems to be frequent.ika virus infection causes a mild disease and, other than notification, no particular action is required. However, as Zika infection may cause a rash that could be confused with more serious diseases such as measles or dengue, these more serious diseases do need to be ruled out.