I really enjoyed "Contagion" as well and think that kind of story telling would work for WWZ (which I also greatly enjoyed - never caught the film after I realized how different it was from the book). Post pandemic I rewatched the Contagion and was struck by how many things the screenplay anticipated that actually happened with COVID: conspiracy theories, quack cures, resistance to quarantine controls, the total unreadiness of our health care systems to deal with a growing disaster that was so massive and fast moving, running out of storage room for dead victims...Life imitated Art.