Story highlights Congress is set to go on a two-week break this weekend and has yet to vote on the Zika funding

Congressional Republicans have suggested using funding from last year's Ebola outbreak to fight the virus

(CNN) Hillary Clinton knocked congressional Republicans on Friday for taking a scheduled two-week break without approving President Barack Obama's requested $1.8 billion to combat the Zika virus.

Zika is a mosquito-borne virus that has spread rapidly in Central and South America. The virus is particularly concerning because it has been linked to dangerous neurological birth disorder in newborns.

The World Health Organization estimates 3 million to 4 million people across the Americas will be infected with the virus in the next year.

"There is a lot we need to do, and fast. First and foremost, Congress should meet President Obama's request for $1.8 billion in emergency appropriations to fight Zika," Clinton said in a post on Medium , referring to the budget request the President made in February.

Congress is set to go on a two-week break this weekend and has yet to vote on the Zika funding. Congressional Republicans have suggested using funding from last year's Ebola outbreak to fight the virus.

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