As the COVID-19 outbreak continues to unfold, television’s major networks are responding with special coverage.

Tonight, “20/20″ (10 p.m., ABC) will air a live one-hour special on the latest news, developments and people affected by the virus and widespread changes sweeping the nation. “Pandemic: What You Need to Know – A Special Edition of 20/20,” will air tape-delayed for the West Coast.

The prime-time program will be anchored by David Muir and feature reporting by chief medical correspondent Dr. Jennifer Ashton and ABC News’ worldwide network of correspondents.

ABC says the special will provide “vital up-to-the-minute information about the global health crisis “and an up-close look at the Roche Diagnostics lab, which just days ago was authorized by the U.S. Food and Drug Administration (FDA) to make a faster coronavirus test.

During “20/20,” Dr. Ashton will not only address common questions, including the testing abilities of different states, but also answer questions from social media.

ABC also announced that, beginning on Tuesday, the network will alter its late-night programming to deliver the latest COVID-19 updates from its news department. Under the change, “Nightline” will air in the 11:30 p.m. time slot normally dedicated to “Jimmy Kimmel Live.”

Kimmel’s talk show will move to 12:05 p.m. and air reruns for two weeks.

On Thursday, Lester Holt will anchor “NBC News Special Report: Coronavirus Pandemic” (10 p.m., NBC). The hourlong special, NBC says, will provide “crucial real-time information around what viewers need to know about the coronavirus.” It will also include expert analysis and health advice from NBC’s Coronavirus Crisis Team, including  correspondent Dr. John Torres and top virologist and NBC News and MSNBC medical contributor Dr. Joseph Fair.

In addition to the broadcast network, the special will air on MSNBC, the streaming service NBC News NOW and Telemundo Digital.

Also on Thursday, PBS plans to air “Confronting Coronavirus: A PBS Newshour Special” at 8 p.m. The program will focus on health precautions for individuals and the public at large, as well as the pandemic’s economic impact in both the United States and globally.

Anchored by managing editor Judy Woodruff, it will include interviews with officials, reporting from special correspondents throughout the world and a virtual town hall with curated questions from people across America. The town hall will be moderated by correspondents Amna Nawaz and William Brangham.