YONKERS - Enrollment began today for the Affordable Care Act, also known as "Obamacare," but many questions still abound.

Health care expert Nalini Purvis joined Matt Sampson in the News 12 studios to answer many of the frequently asked questions about the new law.

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Purvis, a program director at Hudson River Health Care in Peekskill, explained what the new law means to people who already have insurance. She also discussed the costs of insurance, how to apply, and who is eligible for a subsidy.

Roughly 48 million people across the country who don't have health insurance can start shopping around for a plan today. The main components of "Obamacare" will proceed despite the shutdown. That's because its funding is protected from the whims of Congress, like other functions such as Social Security and national defense.