This worksheet helps students recognize how infections spread from person to person. They must read through descriptions of 9 people & connect each person to the next to figure out the path of the virus. They must figure out who "patient zero" is. I also have students highlight extra information, unsanitary actions, & healthy habits.There is no answer key, but the order of infected is:Jessica, Max, Amanda, Carrie, Marcie, Jacquelyn, Troy, Kyle, AlanTherefore Jessica is patient zero.