Five additional people have tested positive for measles in Mesa County, possibly spreading the virus in a Grand Junction hospital, a pizza restaurant and local gas stations.

Two people in Mesa County had tested positive for measles in mid-August. Neither patient had traveled to a location with an outbreak, raising the possibility of silent spread in western Colorado .

Three people who shared a household with one of those patients subsequently tested positive for the virus, but don’t pose a risk to the public because they were in quarantine when they became contagious, said Hope Shuler, spokeswoman for the Colorado Department of Public Health and Environment.

Two additional people who crossed paths with one or both of the initial cases also have gotten sick, and could have inadvertent

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