BALTIMORE (WJZ) — Baltimore City Schools have canceled all domestic and international travel outside of Maryland and Washington, D.C. for students and staff until June 15 amid fears about the coronavirus, officials said Friday.

In a statement, officials said they’re taking the measure out of an abundance of caution. All trips within Maryland and D.C. will be allowed to continue.

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School officials are also urging everyone to wash their hands to avoid spreading the virus.

As of Friday afternoon, three Marylanders — all from Montgomery County — have tested positive for COVID-19; 12 more tests are pending. In total, 41 people from Maryland have been tested.

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A number of Maryland universities, including Towson University, have canceled study abroad programs due to the virus. Johns Hopkins University also said Friday it will hold the first two rounds of the NCAA Division III men’s basketball tournament scheduled for this weekend without fans.