Updated at 6:34 p.m.

Hidalgo County health officials are investigating a new mumps case within Pharr-San Juan-Alamo ISD, the district confirmed Thursday.

School district spokesperson Arianna Vasquez-Hernandez said they were notified by the county Thursday of a case affecting a John McKeever Elementary School “staff member.”

“This individual was there when students were not present, but we made sure to send it out to all parents so they were aware,” Vasquez-Hernandez said, adding that a notice was sent to parents as a precaution.

Before the confirmation of another case in PSJA ISD, there were 51 confirmed mumps cases over the last two months, according to a county health department tweet on May 29.

A case was also confirmed at Escobar Elementary School on Wednesday, which was originally reported by KRGV. The McKeever Elementary case is now the sixth in the county to confirm mumps cases.

A notice sent to McKeever Elementary parents reads:

“This is Principal Gomez calling to inform you a case of mumps was confirmed at our school. We are fortunate that our students were not in school when the sick individual was present; however, we still took actions to disinfect the school as a precaution.

As per health officials, vaccination against mumps is the best protection against it, but vaccinated individuals may still become infected. Anyone diagnosed or suspected with having mumps should stay home for a minimum of five days. If you or anyone you know experience symptoms please contact your healthcare provider.

Please feel free to contact us if you have any questions or concerns. Thank you.”