Updated at 11:15 a.m. April 4: Revised with additional information from UT Austin.

The number of University of Texas at Austin students that have tested positive for COVID-19 after a spring break trip to Mexico is now at 49, university officials said Friday.

University officials originally confirmed Tuesday that 28 students tested positive, which rose to 44 by Wednesday. In a news release, the university said it’s possible for the number to rise again in the coming days, but that any increase would be minimal as a small number of students are waiting for testing and results.

“This incident is an urgent reminder of the responsibilities students have to their communities, each other and themselves,” Soncia Reagins-Lilly, the university’s vice president for student affairs and dean of students, said in a news release. “We are deeply concerned for the health of the students affected and for their broader impact on the communities where they live.”

The university said Friday that a total of 211 students had traveled to Cabo San Lucas, Mexico for spring break. Thirty-three students traveled independently, while the remaining 178 took a chartered plane organized through the travel company JusCollege.

The university said those who tested positive were directed to self-isolate for a minimum of one week from the onset of symptoms and for at least two days after symptoms were resolved. People with negative test results were told to self-quarantine for 14 days from their last date of exposure.

JB Bird, director of media relations for the university, said the spring break trip took place from March 14-19. Mexico was not under a federal travel advisory at the time.

Details about the students’ hometowns were not made available. Emily Tuttle, public information specialist for the City of Austin, said if a student tests positive for COVID-19, their case will be included in the total in their county of residence.

“If someone receives a positive test result in Dallas, but their official residence is Austin, that result is included in the Austin/Travis County totals,” Tuttle said in an email. “In reverse, if someone tests positive in Austin but resides in Dallas, that positive test would not be included in Austin/Travis County totals.”

Public health officials in Austin said some of the people on the chartered trip returned to the United States on separate commercial flights. The department said Austin Public Health, UT Health Austin and University Health Services made contact with everyone on the trip using flight manifests from the U.S. Centers for Disease Control and Prevention and also notified the Department of State Health Services.

“The virus often hides in the healthy and is given to those who are at grave risk of being hospitalized or dying,” Dr. Mark Escott, Austin-Travis County interim health authority, said in a written statement earlier this week. “While younger people have less risk for complications, they are not immune from severe illness and death from COVID-19.”

Since the news of the students’ spring break trip began circulating, rumors began to circulate online about the identities of the people on the trip, the university said. Reagins-Lilly said in the release that there is no indication that any of the students were connected to student organizations at UT.

“As we enter a new reality of working together remotely, relying on online tools, it’s vital that we show respect for one another,” Reagins-Lilly said in a written statement. “We should resist the temptation to single out members of our community. COVID-19 is affecting all elements of our society, and fighting it depends on our abilities to unite as a community.”

Texas House Speaker Dennis Bonnen also reacted to the news, and said that taking the trip was “grossly irresponsible.”

“Quit being an a--,” Bonnen told KXAN Tuesday. “Get over yourselves. Whether you think this is an issue or not, it is. Whether you think it could affect you or not, it does. The reality of it is, if I’m a college kid who’s going to spring break in Mexico, you’re affecting a lot of people. Grow up.”

More than 5,000 people have been infected with coronavirus in Texas, 351 cases of which were in Travis County as of Saturday.

Austin Mayor Steve Adler issued a stay-at-home order for the city March 24, days after the students returned from their trip. The order requires nonessential businesses to close but allows businesses that are deemed essential, including health care providers and grocery stores, to keep operating.

Staff writer Marc Ramirez contributed to this report.