American Comics: I, the containment object is exposed at the beginning

"After conducting the experiment, the results were quite shocking. First, the first group of people who watched the death video together were infected with the strange virus almost at the same time seven days later, causing heart disease and death."

["As for the second group, only the last person who watched the videotape died. The reason why the first few people did not die is probably because the curse can be transferred by showing the videotape to others.\