According to the CDC, a valley fever (coccidioidomycosis) outbreak across four US states can be traced back to community service trips in Mexico, reports.

Valley fever is a fungal disease acquired primarily through inhaling airborne spores in dust or soil.

The outbreak involved eight patients from Kansas, Maryland, Michigan and New York, including five high school students.

The patients had attended seven different service trips from June to July 2018 and identified a single house in Tijuana that seven of the eight patients had done excavation or construction work on, making it the likely source of exposure for those patients, they said.