Zika Virus

Zika is an infection caused by a virus. The illness is usually mild and does not last long. Zika is known to affect brain development in babies whose mothers had the infection during pregnancy, with many cases being reported in Brazil. These babies have been born with microcephaly – they have small heads with brains that have not developed as they should.

Symptoms

Rash, fever, eye infections, muscle and joint pains. Most people will have no symptoms at all.

How do you catch Zika Virus?
Zika virus is spread by a daytime-biting mosquito.

Incubation period
3 – 12 days

Diagnosis

Diagnosis is confirmed by blood tests.

Prevention
Zika can be prevented by taking steps to avoid mosquito bites – by wearing loose-fitting clothing and using an effective insect repellent. It is known that Zika virus can be spread through sex, especially from male partners. Precautions should be taken by both men and women whilst in high risk areas and for a period of time afterwards, as advised by a travel health nurse.

Treatment
There is no specific treatment for Zika infection apart from rest, drinking plenty of fluids and taking medication for fever or pain.

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Did you know?

  • Severe cases of Zika virus infection are uncommon
  • Zika virus is spread by the same mosquito that spreads dengue fever and chikungunya, which have similar symptoms
  • More detailed information regarding individual country specific risk can be found here
Professor David Ross OStJ

Professor David Ross OStJ

Medical Director, MASTA

GMC No. 3115417 Professor David Ross OStJ is Medical Director of MASTA and Dean of the Faculty of Travel Medicine at the Royal College of Physicians & Surgeons (Glasgow). He has been associated with MASTA since 2005 and served 41 years in the Army, including over 10 years as senior advisor on public health to