Relier Pairs Vaccination Review GameVersion en ligne Review game for vaccinetmv par Tina Tiny 1 Vaccines work by? 2 Are vaccinations essential to a country's health? 3 Do vaccinations cause autism? 4 Symptoms, such as a fever or rash, are? 5 How much do dose packages cost? 6 Herd immunity is when? 7 Herd immunity drastically lowers the? 8 What diseases have dropped in existence rate due to vaccinations? 9 What are vaccinations? 10 What groups do herd immunity protect? elderly people, young children, and people with weakened immune systems. smallpox and polio teaching the immune system to mimic a natural infection. chance of a disease outbreak. a substance prepared from dead or living microorganisms that is introduced into the body through inoculation. $17-$154 a significant portion of a community is immunized against a contagious disease, so most citizens are protected against that disease considered to be normal after being vaccinated. Yes. No.