Health officials say they haven't found a connection between four cases of flesh-killing bacteria infections in Boulder County in the past 16 months.
In fall 2004, University of Colorado physicist and Nobel laureate Eric Cornell was diagnosed with the rare, invasive form of streptococcus A- bacteria.
Since then one person has died after becoming infected and two others had to have multiple surgeries to remove infected tissue.
Boulder County health officials tell the Daily Camera newspaper that there appears to be no evidence that strep A- infections are on the rise in the area.
But they say it does not track incidents of the infection.
Necrotizing fasciitis, commonly known as flesh-killing disease and strep-linked toxic shock syndrome are the rarest but most severe ailments associated with strains of the bacteria.
Strep A, commonly found in the throat and on the skin, causes more than 10 million cases of strep throat and mild skin infections each year nationwide.
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