### 4. Does everyone who gets the vaccine become immune to the disease they were vaccinated for? What is the percent success rate for the measles vaccine?
Not 100% but most/high percentage of people who get vaccinated will become immune to the disease they were vaccinated for.
The scucess rate for the measles vaccines was $`85\% - 95\%`$ when delivered between childrens 12-15 months of age, and $`97\%`$ with a second dose at a later age.
Disneyland is populated with people and people are from around the world, which increases infection rates due to the close proximity the people are to each other and the chances
of people from different parts of the world to bring the disease to it, such as the case in california. Furthermore, more people in california are not getting the MMR shots (measles-mups-rubella),
which increases the risk of infections and renders herd immunity useless. Lastly, disneyland contains many young children, which are more susceptible to the measles virus, and even some who cannot get or have gotten their shot yet.
### 7. Why was Jennifer Simon upset about the anti-vaccination parents who decided not to vaccinate their children? i.e. Who can be impacted by parent’s decision not to vaccinate their child?
She was upset because those people affect her children, since her child was under risk of getting the measles virus from the anit-vaccination parents and their children.
A parents decison not to vaccinate their children can render herd immunity useless, and put other children and people under risk of contracting the disease.
When a large percetnage of people are vaccinated against a certain disease, which makes it very hard for the disease to spread and helps protect those who cannot be vacacinated against the disease (age, condtions, etc).
It works when a large percentage of people are vaccinated.
Usually $`90\%`$ is needed inorder for herd immunity to work. For very contagious diseases, such as measles, $`95\%`$ of people need to be vaccinated inorder for herd immunity to take place.
### 10. Barbara Loe Fisher heads a group that supports the right to opt out of having their kids vaccinated. She was quoted in the Disney outbreak article that it is not wise or responsible to blame unvaccinated people for the Disney outbreak because a small number of those stricken had been fully vaccinated. Use scientific knowledge from to respond to this statement.
This statement is false. Since only a small number was vaccinated, herd immunity was useless, which could have infected many unprotected children. Furthermore, without getting vaccinated, you have a high chance of getting the disease if being in contact with those infected around you.
