The person drove to Starbucks on S. Spulveda Boulevard 3006 in West Los Angeles early in the morning of October 16, before leaving for Disneyland at 9:15 am, the Los Angeles Department of Health said in a statement.
"Anyone who could have been to these locations during these periods in these periods could be at risk of developing measles up to 21 days after exposure," the statement said.
Measles can spread through coughing and sneezing and can live in the air for up to two hours if infected Person coughs or sneezes. As more details become available, the department will update information on exposure times and locations.
"Measles are a highly contagious and potentially serious disease that initially causes fever, coughing, red and watery eyes, and eventually a rash," said Dr. Muntu Davis, health officer of the Los Angeles County.
"Measles spread by air and through direct contact even before you know it MMR immunization is a very effective way of protecting yourself and preventing the unintentional spread of this potentially serious infection to others."  The Department asked those affected to monitor for 7 to 21 days after their onset for illnesses with fever and / or unexplained skin rashes in contact with the virus. If symptoms do occur, they should stay at home and see a doctor immediately.
Residents should contact their doctor as soon as possible to inform them of potential exposure if they are pregnant, have a child, have a weakened immune system, and / or are not vaccinated.
There were 19 measles cases among residents of Los Angeles County in 2019.