* The virus remains a threat: The book focuses on the initial outbreak of the virus and the attempts to contain it. While the scientists do make progress in understanding the virus, there's no definitive cure or solution presented. This leaves the reader to ponder the future implications of the ongoing threat.
* The characters' fates are uncertain: The book ends with some characters seemingly safe and others still in danger. The ending suggests a continued struggle with the virus and the possibility of further outbreaks.
* The book explores the human condition: "Code Orange" is more about exploring the human response to a crisis than providing a simple solution. It touches upon themes of fear, isolation, grief, and the power of human connection in the face of adversity. The ending emphasizes the importance of these themes rather than offering a clear-cut solution.
Therefore, the "resolution" of Code Orange is more about the emotional impact and the lasting questions it leaves the reader with than a definitive happy ending.