UPDATED: AT&T’s WarnerMedia scaling back its participation in SXSW 2020 in Austin, Texas, joining a growing list of companies canceling plans to attend the annual fest over concerns about the spread of the coronavirus (COVID-19) epidemic.

HBO has canceled panel sessions on “Watchmen” with Damon Lindelof, Trent Reznor and Atticus Ross and “A Black Lady Sketch Show” with creator Robin Thede. It also canceled the premiere of unscripted series “We’re Here,” followsing renowned drag queens Bob the Drag Queen, Eureka O’Hara and Shangela Laquifa Wadley as they recruit small-town residents across America to participate in a one-night only drag show.

Among other WarnerMedia activities at SXSW, CNN had been scheduled to host event space “Citizen House @ SXSW” from March 14-15 with appearances by CNN political reporter Chris Cillizza and a Democratic presidential candidates debate watch party on Sunday, March 15. That is now canceled.

“As a precaution, WarnerMedia has decided it best not to move forward with activations at SXSW,” CNN’s communications team said in a tweet Thursday. “We look forward to seeing everyone in Austin next year.”

The company’s moves follows the exit from SXSW by a number of others, including Netflix, Apple, Amazon Studios, Facebook, Twitter, TikTok, Mashable and Intel.

A rep for WarnerMedia clarified that while it canceled public marketing activations, several panels and screenings are still on track to happen as scheduled. Those include panels for TBS’s “Full Frontal with Samantha Bee” and the premiere of TNT’s “Snowpiercer” TV adaptation. The company also is hosting an HBO Max session with Robert Greenblatt, chairman of WarnerMedia Entertainment and Direct-To-Consumer, as well as a panel “Inside Innovation at WarnerMedia” with Jesse Redniss, GM, WarnerMedia Innovation Lab; Mark Yeend, director, product, interactive R&D at HBO; Greg Gewicky, VP, emerging technology at Warner Bros.; and Peter Scott, VP of emerging media and innovation, Turner.

CNN employees currently slated to speak at SXSW include Andrew Morse, executive VP and GM of CNN Digital Worldwide; chief climate correspondent Bill Weir; and anchors Kate Bolduan and Poppy Harlow.

Meanwhile, the CW’s planned “Supernatural” panel at SXSW with series stars Jared Padalecki, Jensen Ackles and Misha Collins has been canceled, as has CW’s annual joint party with BuzzFeed that had been scheduled for March 14. “The CW is taking precautionary measures with respect to the current public health situation and have opted to not participate in SXSW this year,” the network said in a note to invitees. The CW is jointly owned by Warner Bros. Entertainment and ViacomCBS.

For now, SXSW organizers have said the music, tech and entertainment festival will proceed from March 13-22 as planned. Austin government officials said on Wednesday they saw no reasons to cancel the event and noted that no cases of coronavirus infection have been identified in the area. A Change.org petition urging SXSW to be canceled because of the virus outbreak now has amassed over 49,000 signatures.

Last year’s SXSW drew 232,258 attendees spanning music, film, interactive, and gaming, according to the festival.

Events that have been canceled because of the coronvirus outbreak include MipTV, Google I/O, GDC, Facebook’s F8 and Mobile World Congress.

To date, there have been nearly 97,000 cases of coronavirus infection and 3,305 deaths worldwide, including 11 in the U.S., according to the Johns Hopkins Center for Systems Science and Engineering’s coronavirus tracker.

Updated 3/6 12 p.m. ET with information on HBO’s cancelled events.