What is the two-word term for tracking a disease by gathering data on the movements and interactions of someone infected?
Plss help this is the third time I posted the question .

On what evidence did you base your predictions? check the four boxes that apply. there is a rope around his neck. he is in alabama. his hands are tied behind his back. he is standing high above a river. the bridge is for railroads. some crimes are punished by hanging.