One main event might be when the virus reaches major cities around the world, causing a global panic. People would be trying to flee, and there would be chaos at airports and train stations. Another event could be the collapse of the global economy as businesses shut down due to the virus. Also, the struggle of the medical community to find a cure or treatment would be a significant event in the novel.
In the novel, the virus sweeping the world would likely have several key events. First, there would be the discovery of the virus, which might be initially underestimated. Then, as it spreads, there would be a mass quarantine of entire cities or regions. This would lead to civil unrest as people resist being confined. The death toll rising to an alarming level would be another major event. As the virus continues to spread, countries might start closing their borders, which would disrupt international relations. And finally, the race among scientists to develop a vaccine or effective treatment would be a crucial part of the story, with every step and setback being an important event in the context of the virus sweeping the world.