Erika Jenssen , the communicable disease program director for Contra Costa Health Services , said Thursday even those who shared the same airspace as the infected student 1 to 2 hours after the fact -- and who have not been vaccinated for measles -- may get sick . A UC Berkeley student diagnosed with the measles may have exposed himself . Health officials issue warning to students , those who commuted on time . ` ` Measles is a very serious viral illness , and it is very contagious , '' he says .
A UC Berkeley student diagnosed with the measles may have exposed himself . Health officials issue warning to students , those who commuted on time . ` ` Measles is a very serious viral illness , and it is very contagious , '' he says .