Matching Pairs Epidemic MatchingOnline version assignment by Benjamin D Morgan 1 Possible Epidemic Vaccination Percentage Level 2 Immune 3 Herd Immunity 4 Epidemic definition 5 Vaccine 6 Virus 7 viral disease infectious disease that spreads rapidly and sickens a large number of people A harmless dead or weakened virus/bacteria that stimulates a person's immune system to mount defenses against the virus/bacteria When below 85-95% of the population is vaccinated against a virus A sickness caused by a virus is called When a virus/bacteria cannot cause a person to become sick. You are considered __________ to this virus/bacteria When 85-95% of the population is vaccinated against a virus A sub-microscopic particle that must infect living plant or animal cells to reproduce