Brazil's President Dilma Rousseff said her government will not spare resources in mobilizing her country to combat the mosquito that transmits the Zika virus now spreading rapidly through the Americas.

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"There will be no lack of funding," Rousseff said in an address to a joint session of Brazil's Congress at the start of its legislative year.

Rousseff also said Brazil and the United States will enter a partnership to develop a vaccine against Zika as soon as possible to stem the spread of the virus that has been linked to thousands of cases of Brazilian newborns with brain damage.