New York Yankees third base coach Phil Nevin, first base coach Reggie Willits and another unnamed support staff member all tested positive for coronavirus in what has been described as "breakthrough" cases, the team announced Tuesday according to a report. 

The Centers for Disease Control describe "breakthrough cases" as those who contract COVID-19 while they are fully vaccinated. The CDC said it expected there "will be a small percentage of people who are fully vaccinated who still get sick, are hospitalized, or die from COVID-19."

Nevin would not be at the game against the Tampa Bay Rays, the team announced Tuesday. Alternate coaches have been brought in to take over Nevin and Willits' duties temporarily, The New York Times reported. 

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All three had been fully vaccinated.

The Yankees announced Tuesday, May 11, 2021, that Nevin, who is fully vaccinated, has tested positive for the coronavirus. He is currently under quarantine protocol in Tampa. Under Major League Baseball’s guidance and advice, and with its assistance, additional testing and contact tracing are ongoing. (AP Photo/Chris O'Meara, File)

The Yankees announced Tuesday, May 11, 2021, that Nevin, who is fully vaccinated, has tested positive for the coronavirus. He is currently under quarantine protocol in Tampa. Under Major League Baseball’s guidance and advice, and with its assistance, additional testing and contact tracing are ongoing. (AP Photo/Chris O'Meara, File)

"We have a breakthrough positive involving 3B Coach Phil Nevin, who is fully vaccinated. He is currently under quarantine protocol in Tampa. Under Major League Baseball’s guidance and advice, and with its assistance, additional testing and contact tracing are ongoing," the team said.

ATHLETICS EXPLORING RELOCATION FROM OAKLAND, MLB RELEASES STATEMENT

Yankees manager Aaron Boone told reporters the team learned of Nevin's positive test after Sunday’s win over the Washington Nationals.

According to the Yankees’ team site, Yankees players and coaches received the Johnson & Johnson single-shot vaccine on April 7 and the team crossed the 85% threshold needed to allow relaxed coronavirus stipulations in the clubhouse.

Boone said test results are pending for a few others amid reports there were more positive cases. He said the team is running on "a bit of a skeleton staff."

No players have tested positive yet, The Times reported. 

Nevin has been with the Yankees since the 2018 season and Willits has been with the team since 2015. 

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The team entered Tuesday with an 18-16 record and second in the American League East division.