Answer:
"The smallpox vaccine does not contain smallpox virus and cannot spread or cause smallpox. However, the vaccine does contain another virus called vaccinia which is live in the vaccine. Because the virus is alive, it can spread to other parts of the body or to other people from the vaccine site."
[Copy and pasted from a medical website]
Attribution theory refers to how the social perceiver uses information in trying to explain casual events in everyday life. This primarily discusses as to how the information gathered are combined with in order to create a casual judgment. According to Heide (1958), people are like naive psychologists who are trying to figure out how and why things happen. For example, if someone with a bad family background succeeds, people will say that he used his struggle as a motivation and if he fails people will say that he succumb to the challenges.