Children receive temperature checks to prevent the spread of coronavirus disease (COVID-19) at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

A counselor sanitizes a basketball to prevent the spread of coronavirus disease (COVID-19) at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

Children routinely sanitize to prevent the spread of coronavirus disease (COVID-19) at Farmington Family YMCA summer camp in Farmington Hills, Michigan, U.S., June 23, 2020.

A counselor sanitizes a basketball to prevent the spread of coronavirus disease (COVID-19) at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

Counselors wearing protective face masks gather for a game at Carls Family YMCA summer camp, amid the coronavirus disease (COVID-19) outbreak in Milford, Michigan, U.S. June 23, 2020.

Children gather for summer camp activities amid the coronavirus disease (COVID-19) outbreak, at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

A counselor wearing a protective face mask plays with children as summer camps reopen amid the spread of coronavirus disease (COVID-19) at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

Signs are pictured as children and staff receive temperature checks to prevent the spread of coronavirus disease (COVID-19) at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

Children break off in groups for snack at Carls Family YMCA summer camp, amid the coronavirus disease (COVID-19) outbreak, in Milford, Michigan, U.S., June 23, 2020.

A counselor wearing a protective face mask gathers with children for a game at Carls Family YMCA summer camp, amid the coronavirus disease (COVID-19) outbreak, in Milford, Michigan, U.S., June 23, 2020.

Children play at a summer camp amid the coronavirus disease (COVID-19) at Carls Family YMCA in Milford, Michigan, U.S., June 23, 2020.

A counselor wearing a protective face mask gathers with children during snack time at Carls Family YMCA summer camp, amid the coronavirus disease (COVID-19) outbreak, in Milford, Michigan, U.S., June 23, 2020.

Children arrive for check-in amid the coronavirus disease (COVID-19) at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

Counselors sanitize as children receive temperature checks to prevent the spread of coronavirus disease (COVID-19) at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

Children play in the gym amid the coronavirus disease (COVID-19) outbreak, at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

Children play outside at Farmington Family YMCA summer camp, amid the coronavirus disease (COVID-19) outbreak, in Farmington Hills, Michigan, U.S., June 23, 2020.

Children play at a summer camp amid the coronavirus disease (COVID-19) outbreak, at Carls Family YMCA in Milford, Michigan, U.S., June 23, 2020.

Children receive temperature checks to prevent the spread of coronavirus disease (COVID-19) at Carls Family YMCA summer camp in Milford, Michigan, U.S., June 23, 2020.

A counselor routinely cleans outdoor balls and toys to prevent the spread of coronavirus disease (COVID-19) at Farmington Family YMCA summer camp in Farmington Hills, Michigan, U.S., June 23, 2020.