Residents of 100 Mile House are also being alerted they could have been exposed to the disease during a three hour period, from 6:30-9:30 p.m., at the Interlakes Market on March 13.
Public health officials have identified another four related cases in Multnomah County.
The last reported measles cases in Bexar County was in 2007.
Health officials have now confirmed eight cases, Jermont Terry of WDIV reports.
Interior Health is monitoring and following up with people who may have been in contact with the patient to determine immunization status and, if necessary, offer them post-exposure protection. The risk to the broader public is considered low, however, Interior Health has mentioned where the infected individual was for the safety of the province.
A 95 per cent vaccination rate is required to achieve herd immunity, which makes it much more hard for potentially deadly diseases such as measles to spread and protects vulnerable populations such as infants and seniors.
Anyone who is concerned about exposure to measles should watch for symptoms of measles including fever, cough, runny nose and red and inflamed eyes.
There have been four more cases of measles confirmed in Oakland County health officials said Thursday
Call ahead to your doctor's office or the hospital if you think you may have been exposed to measles so they can plan to prevent other people from potential exposure.
Interior Health is also offering drop-in immunization clinics at the South Cariboo Health Centre and Williams Lake Health Centre.
Friday, March 29 - 9 a.m.to noon and 1- 4 p.m.
Saturday, March 23 - noon to 4 p.m.
Daily from March 25-29, 2019 - 9 a.m.to noon and 1 p.m.to 4 p.m.
Jax Kar Wash, 27054 Woodward Ave., Royal Oak, from 1-4 p.m.
The outbreak started last week from a man who was visiting from Israel.