SANTA CLARA CO., Calif. (KGO) -- An infected tourist recently made several stops across Santa Clara County and may have exposed shoppers, diners and other visitors to measles.
According to the County of Santa Clara Public Health Department, the tourist made 20 stops across the South Bay between March 16 and the 22.
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Dr. Sara Cody, Public Health Director for Santa Clara County explained, "The time that the infected person was at each location was not very long, but there were numerous locations.
Dr. Cody stressed the alert is not a public health emergency. She said the vast majority of people in the county are vaccinated against virus and are protected.
Still, the measles is a highly contagious respiratory disease that can be transmitted from one person to another through the air.
"It doesn't have to be face to face contact, it's just sharing the same air space," Cody said. "Or even being in the air space after an infectious person has been there."
"Since the weather is changing, you don't know if it's going to be just a cough, or if it's going to be that," Andrea Fuentes told ABC7 News. "It's kind of scary, it's kind of concerning... Really concerning actually."
Fuentes was visiting the Walmart in Mountain View which made the list of possible exposure locations. At her side was her 3-year-old daughter, who she says is with her all the time.
"It's concerning that she's here with me and it could be possibly contagious," she said.
Fuentes said her concern surrounds the fragile immune systems of young children.
County health officials addressed the population most susceptible to contracting the disease.
At a press conference on Tuesday, Dr. Cody said, "Some people are not protected from measles, and at the top of that list are babies, because they're too young to be vaccinated.
She added, "If a family happened to be traveling with their baby to one of these places where the infectious person was, they should be watching for symptoms."
Symptoms include a rash, fever, cough, runny nose and red eyes. They can develop anywhere from seven to 21 days after exposure.
The department provided the following list of places visited by the infected tourist:
Saturday, March 16
Sunday, March 17
Monday, March 18
Tuesday, March 19
Wednesday, March 20
Thursday, March 21
Friday, March 22