A tourist with measles visited 20 restaurants, stores and destination in several South Bay cities last week, prompting public health officials to issue a warning: unvaccinated people who crossed paths with the traveler may get sick.

The international tourist stopped by places in Cupertino, San Jose, Santa Clara, Sunnyvale, Palo Alto and Mountain View from March 16 to last Saturday before being hospitalized for the disease, according to the Santa Clara County Public Health Department. Citing patient privacy laws, the county declined to release any identifying details about the person.

“The good news is that most people living in Santa Clara County have been vaccinated and are protected from measles,” Dr. Sara Cody, who heads of the county health department, said in a news release. “However, if you or a family member are not immune to measles and you think you were exposed to measles, watch closely for fever, cough, red eyes, runny nose and a rash that starts on the face. Call your doctor right away if you develop any of these symptoms.”

Symptoms take about one to three weeks from exposure to develop, she noted. Unvaccinated children, including infants too young to receive the vaccine, have the highest risk of contracting the virus.

Below is a list of places the tourist visited, according to the county.

• Saturday, March 16
  9 to 11am: T Mobile Store, 789 El Camino Real, Sunnyvale
  9:30am to noon​: International House of Pancakes, 644 N. First St., San Jose
  11am to 1:30pm: Apple Visitor Center, 10600 N. Tantau Ave., Cupertino
  12:30 to 3:30pm​: Hoover Tower Observation Deck, Stanford University, 550 Serra Mall, Palo Alto
  1:30 to 4pm:​ Poki Bowl, 2305 El Camino Real, Palo Alto
  3 to 5pm: Walmart, 600 Showers Drive, Mountain View
  4 to 6:30: The Fish Market, 3775 El Camino Real, Santa Clara
  6 to 8pm: Macy’s Valley Fair Mall, 2801 Steven’s Creek Blvd., Santa Clara
• Sunday, March 17
  9:30am to 12:30pm: Bill’s Café, 3163 Middlefield Road, Palo Alto
  6 to 9pm: Cascal, 400 Castro St., Mountain View
  7:30 to 9:30pm:  7-Eleven, 848 E. Evelyn Ave., Sunnyvale
• Monday, March 18
  7 to 10pm: Il​ Fornaio, 2752 Augustine Drive, Santa Clara
  10 to 11:30pm: 7-Eleven, 848 E. Evelyn Ave., Sunnyvale
• Tuesday, March 19
  7 to 9:30pm: Great Mall, 477 Great Mall Drive, Milpitas
  9:30 to 11pm: Seniore’s Pizza, 940 Monroe St., Santa Clara
• Wednesday, March 20
  7 to 9:30pm: SA-BY Thai Cuisine, 404 S. Second St., San Jose
  9 to 10:30pm: Lucky, 3705 El Camino Real, Santa Clara
• Thursday, March 21
  7:30 to 9:30pm: CVS Pharmacy, 1165 El Camino Real, Sunnyvale
• Friday, March 22
  4:30 to 6:30pm: Safeway, 645 San Antonio Road, Mountain View
  5:30 to 7:30pm: CVS Pharmacy, 1675 Hollenbeck Ave., Sunnyvale