– Kansas City Royals All-Star reliever Kelvin Herrera and right fielder Alex Rios have been diagnosed with chickenpox, raising concerns that others may have been exposed.

Team officials said Tuesday that Herrera and Rios will likely miss a couple of weeks. Both players were sent home from Tampa Bay after experiencing symptoms over the weekend.

The Royals have reached out to players, coaches and their families to determine whether anyone else has had chickenpox or may be at risk.

The disease is highly contagious, spread by coughing, sneezing or touching. It causes a blisterlike rash, fever and tiredness. The most at-risk players are those from countries in Latin America, where the chances of childhood inoculation are lower, experts say.

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