A deadly bacteria, carried by ticks, is killing young people in Baja California - and moving north.

EJIDO PADRE KINO, MEXICO - JUNE 5, 2023 Ignacia Cruz Cruz, right, watches her son Ezequiel Gomes Cruz, hold their dog Coca, who was checked for ticks in Ejido Padre Kino, Baja California Norte, Mexico on June 5, 2023. The deadly Rocky Mountain Fever, a tick borne bacterial disease that uses dogs as hosts, has been detected in her neighborhood. There has been a surge in fatalities in the northwestern region of Mexico and it is crossing the border into the southwestern United States. (Photo by Michael Robinson Chávez/The Washington Post via Getty Images)