Articles on Zika

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Are Olympic athletes, officials, reporters and spectators at risk travelling to this Zika-affected city? Marcelo Sayao/AAP

Will Zika virus cast a shadow over the Rio Olympics?

The outbreak of mosquito-borne Zika virus in South America has cast a shadow over preparations for the Olympic and Paralympic Games to be held in Rio de Janerio.
Fumigation to prevent possible spread of the mosquito Aedes Aegypti in Sao Paulo. SEBASTIAO MOREIRA/EPA

Is the Zika panic over?

The number of new Zika-related microcephaly cases in Brazil is falling. But it's too early to relax.
A book about Aedes aegypti mosquitoes is seen next to larvae in a laboratory conducting research on preventing the spread of the Zika virus and other mosquito-borne diseases, at the Ministry of Public Health in Guatemala City. Josue Decavele/Reuters

Zika: Aedes aegypti mosquitoes love biting humans, and that’s why they spread viruses so well

Aedes aegypti is adapted to live in close proximity with humans, and this close association likely contributes to the severity of the Zika outbreak.
Even if Zika sometimes causes pregnant mothers to have babies with microcephaly, this does not necessarily mean every infected mother would have an affected baby. coniferconifer/Flickr

What are the real risks of Zika?

Despite all the hype around Zika, crucial questions remain unanswered. How great is the risk that infection during pregnancy would result in a baby with microcephaly? And what can be done to prevent this?
Guilherme Soares Amorim, who was born with microcephaly, has his head measured. Ueslei Marcelino/Reuters

Proving that the Zika virus causes microcephaly

Zika virus and microcephaly are firmly linked, but scientists are still trying to prove that it has caused the condition.
The link between Zika and microcephaly is not proven, but the incidence of both have greatly increased in the same areas. Percio Campos/Flickr

Explainer: what is microcephaly and what is its relationship to Zika virus?

Despite high rates of infection, the Zika outbreak would not have been particularly alarming had it not been for the sudden and – apparently associated – increase in the numbers of infants born with microcephaly.

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