By DeJanay Booth

(CBS DETROIT) — Detroit Councilman Coleman Young II is experiencing a breakthrough COVID-19 infection, the city announced on Tuesday.

Officials say Young, who was elected to an at-large seat last year, has a dry cough and is self-quarantined and taking oral treatment. Young is also vaccinated and boosted.

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The announcement comes after U.S. Transportation Secretary Pete Buttigieg and 14 other people tested positive for the virus after attending Mackinac Policy Conference on Mackinac Island.

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The gathering is put on each year by a business group, the Detroit Regional Chamber, and attracts more than 1,000 public officials, journalists and others who discuss various political and policy issues.

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Buttigieg disclosed his infection Monday on Twitter, saying he had mild symptoms.

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