Millions of people across 5 states remain without power after Irma

Thousands of utility workers are attempting to restore power to nearly 4.9 million Americans as concerns of heat exhaustion and carbon monoxide poisoning from generators are on the rise.
2:19 | 09/13/17

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Transcript for Millions of people across 5 states remain without power after Irma
There is a race to restore power across Florida. More than 2 million customers back on the grid but millions still in the dark. Some could stay there for weeks. Our chief national correspondent Tom llamas is in Miami with a closer look at the massive effort to get power back. Good morning, Tom. Reporter: George, good morning to you. You know, many people have described the effort to get the power back on as a military-like operation. Well, that's what it looks like here. We're at the largest staging area in south Florida for fp and L. Workers tackling one of the toughest jobs in American history when it comes to power. As utility crews in the south worked feverishly to restore power this morning, nearly 4.9 million Americans across 5 southern states are still in the dark with more than 4.3 million in Florida alone. Their army of restoration workers which now numbers 20,000 is hard at work. Reporter: As temperatures rise with no air-conditioning for some, one Hollywood hospital has scene a stag heing number suffering from heat exhaustion. We've seen patients with temperatures up to 105, 106 degree. No power, no internet, no TV, no bath. We just stuck it out and ate cold ravioli. Cart Kathy got her power back on two hours before the sun went down Tuesday but so many in her family don't have power. Now they're all staying with her. 16, three aren't here right now. 16 people in a three-bedroom house. How many bathrooms? Two. Reporter: Serious danger for those relying on generators. 20 people including children were taken to hospital for possible carbon monoxide poisoning. There was a generator running at that residence when they did call. They were instructed to turn it off. Reporter: In Orlando, a generator inside this home's garage poisoned and killed three members of a family. Four others are still in the hospital in serious condition. The sad meter is 1 to 10. This is an 11. Reporter: Utility companies want to remind everyone to keep generators 20 feet from the home or the garage because that carbon monoxide can easily seem into windows and open door, robin. Must remember that. Okay, Tom, thank you very much.

This transcript has been automatically generated and may not be 100% accurate.

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