It's wrong to give disease.
Paul just found out from his doctor that he has a highly infectious disease.
Paul wants to pick up his medicine from the store.
Paul stays home and pays someone to deliver his medicine to the door.
Paul goes to the store to pick up his medicine even though he knows he could spread the disease.
Paul eventually gets better and no one else gets the disease from him.
Several of the people at the store are infected by Paul's visit.