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Zika Fever

9 questions ยท Health & Medicine

Zika fever was long barely noticed: until an epidemic in Latin America alarmed the world. It is caused by the Zika virus, closely related to the dengue and yellow fever viruses and spread mainly by the day-active Aedes mosquito. Unlike many feared pathogens, a Zika infection runs mild or even entirely symptomless in most people; those who fall ill often have only slight fever, a rash, joint pain and red eyes. The real danger showed itself, however, when the virus spread explosively in Brazil in 2015 and 2016: among the children of women infected during pregnancy, severe malformations of the brain piled up, above all microcephaly: too small a head. Zika thus became the first mosquito-borne disease shown to cause birth defects. The virus can also, in rare cases, attack the nervous system. A special feature is that Zika can also be transmitted sexually. A specific drug or an approved vaccine is still lacking; the best protection is mosquito control and advising pregnant women to avoid outbreak areas. The virus is named after the Zika forest in Uganda, where it was discovered in 1947.

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5 of 9 questions with answers

Which kind of pathogen causes Zika fever?

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A virus

It is related to dengue and yellow fever.

๐Ÿ’ก Did you know? It belongs to the flaviviruses.

Which insect mainly transmits the Zika virus?

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The Aedes mosquito

The same mosquito also carries dengue and yellow fever.

๐Ÿ’ก Did you know? Zika can also be transmitted sexually.

How does a Zika infection run in most people?

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Mild or symptomless

Many do not notice the infection at all.

๐Ÿ’ก Did you know? That is exactly what long hid the danger.

Which severe danger does Zika pose in pregnancy?

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Birth defects in the baby

Typical is microcephaly, too small a head.

๐Ÿ’ก Did you know? Zika was the first mosquito disease with such effects.

In which country did Zika spread explosively in 2015/16?

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In Brazil

The surge in birth defects alarmed the world.

๐Ÿ’ก Did you know? The WHO declared a health emergency.

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