By Natalie Rahhal Deputy Health Editor For Dailymail.com
Published: 21:13 GMT, 12 February 2019 | Updated: 21:14 GMT, 12 February 2019
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People who had had dengue fever before the 2015 outbreak of Zika may have been protected from the disease, a study suggests.
Pau da Lima, a slum city in the Salvador region of Brazil, was hit particularly hard by Zika. Over 70 percent of the over 2.5 million people who live there contracted the mosquito born disease.
But while studying its spread, scientists from Yale University School of Public Health made an unexpected discovery.
Many of the small percentage of people who remarkably dodged the virus, shared something in common: they had had a particular strain of dengue fever before.
The more of antibodies to that virus remained in the blood, the better protected from Zika they seemed to be - but not if they'd had dengue too recently.
There is no treatment or cure for Zika, but people win Brazil who had had dengue fever in the past were less likely to catch Zika during the outbreak in 2015, a new study found
Zika is transmitted a particular
