Sanders chairs the Senate Subcommittee on Health and aging.
The group was presented with the findings on Thursday.
"A recent study by the Journal of Patient Safety found that as many as 440,000 people die each year from preventable medical errors. 440,000 a year. That's more than 1,000 a day," Sen. Sanders said.
Testimony shows there has been progress, but thousands of patients still die unnecessarily from things like infections, adverse drug effects, and diagnostic errors.
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