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Now from Times Square, here's what you need to know.

I'm American's favorite doctor.

Let's talk medical news if we can.

The World Health Organization is calling Dengue Fever a growing health threat with Brazil facing a serious outbreak.

What do we need to know?

Yeah, so you guys first, you know what the most dangerous animal in the world is?

It's the mosquito responsible for killing about a million people worldwide, largely due to malaria.

This is another mosquito-born illness so let's go through the

Dengue fever 101. It's a viral infection that is spread through the bite of

an infected mosquito gives symptoms that range in 80% of the cases

asymptomatic or very mild to in about 5% of cases fever, severe headaches,

muscle and joint, body aches, GI issues, or a rash.

This onset starts anywhere from 4 to 10 days, average of around 7 days after a mosquito bite and

being infected.

Symptoms then last for about a week.

We know how to prevent or curtail mosquito-related illness.

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