Our Lady of the Assumption School was closed early Monday and all day Tuesday because a student may have contracted the swine flu virus.

The first grade student and her mother returned from a trip to Mexico 4 days earlier, the epicenter of the outbreak. They were on vacation in Mexico City.

The mother and daughter have been tested for the swine flu virus, but the results were not available before publication.

From Wednesday to Friday of last week, the student attended classes at the school. Over the weekend, she and her mother both fell ill with flu-like symptoms, said Tod Tamberg, Director of Media Relations for the Archdiocese of Los Angeles, which oversees the school.

School officials were notified about the health scare late Sunday night, according to a news release from the Archdiocese. On Monday morning, school officials got in touch with both the San Bernardino County Department of Public Health and Los Angeles County Department of Public Health. The family lives in San Bernardino County.

On Monday, parents were allowed to pick up their children from school early. Classes were cancelled on Tuesday and parents will be contacted regarding resumption of classes "pending the outcome of the student's test results and further recommendations from the Los Angeles County Department of Public Health," according to an Archdiocese news release.

In a letter written to families of students, OLA Principal Bernadette Boyle attempted to address safety concerns from parents.

“Parents who expressed their concerns this morning were given the option to take their children home and to monitor their children’s health, and report any illnesses to health officials immediately. Those parents who called us to report absences were also advised to take precautions and to continue to monitor their child closely,” Ms. Boyle wrote.

The Archdiocese was advised by the Los Angeles County Department of Public Health to keep the school open on Monday and to practice precautionary measures such as hand washing and covering mouths when coughing or sneezing in order to avoid potential contamination.

In addition to these measures, school officials are advising all parents to monitor their children’s health and report any illnesses to health officials immediately.

Parents will be informed regarding the resumption of classes, “pending the outcome of the ill student’s test results and further recommendations from the Los Angeles County Department of Public Health,” according to the news release.

Ms. Boyle instructed school maintenance staff to clean the school’s communal areas, including the school auditorium, the affected student’s classroom and the rest rooms.

As of Monday afternoon, the California Department of Public Health confirmed 11 cases of swine flu across the state. There are 5 each in San Diego and Imperial counties and one in Sacramento.

Throughout the United States, there were 50 confirmed reports of swine flu. None have been fatal. The suspected number of deaths from the infectious rose to 149 in Mexico, where nearly 2,000 people are believed to be infected.