Gov. Ricardo Rossello raises Puerto Rico's official toll from Hurricane Maria from 64 to 2,975 following new study

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An independent investigation ordered by Puerto Rico's government estimates that 2,975 people died within six months as a result of Hurricane Maria. (AP Photo/Gerald Herbert)

An independent investigation ordered by Puerto Rico's government estimates that 2,975 people died within six months as a result of Hurricane Maria.

The findings issued Tuesday by the Milken Institute School of Public Health at George Washington University contrast sharply with the official death toll of 64.

It's also about double the government's previous interim estimate of 1,400.

Researchers say there was a 22 percent overall increase in the number of deaths from September 2017 to February 2018 compared to previous years.

They say the initial low counts came partly because physicians lacked training on how to certify deaths after a disaster.

They say the elderly and impoverished were most at risk.

A spokesman for Puerto Rico Gov. Ricardo Rossello did not immediately return a message for comment.

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