Sharp Health Care sent a tweet at 2:08 p.m. stating the urgent care location on 5525 Grossmont Center Drive was closed to investigate several reported cases of measles. All other departments at the location were open.
A health official told Fox 5 at least six people with possible cases of measles started coming into the urgent care facility around 11 a.m. Wednesday. The patients were immediately masked and moved to an isolated area.
About 40 people were in the clinic at the time and may have been exposed, the health official said.
Anyone with symptoms of the measles, including fever and rashes, has been asked to call their doctor before traveling to any facility.
Details regarding the identities of the infected people were not released for reasons of confidentiality. They have been released and are now under quarantine.
It was unknown if the cases were linked to the Disneyland outbreak, which caused over 20 people to get sick, including three in San Diego.
San Diego County health officials said they are aware of the cases and are investigating.