passive and active immunity
Imminizations can prevent disease, and also the spread of disease. People who get immunized from a certain disease cannot catch that disease, which minimizes the chance of others getting the disease (such as those who's immune systems or allergies will not allow them to get immunized.)
A cause of morbidity among immunizable disease is lack of access to vaccinations. The disease might also occur in people who had access to the vaccine but chose not to be immunized.
Because whenever there is a group of people together in a small space like classrooms, there is an increased chance of spreading infectious diseases. When more people are immunized against a disease, there is an increase in 'herd immunity'. That is, it's less likely that the disease will appear in that group, even if a few of them are not immunized for whatever reason. Keep in mind that there are people who cannot not get vaccines for medical reasons like allergy. So, if a family chose not to vaccinate their kids for non medical reasons, they not only increase their own risk of getting the disease, they also increase the risks of other children who cannot get the vaccine due to medical reasons.
Because so many people have been immunized in the past, no one caught it as much. People thought overtime it wasn't around. (because of so many being immunized, it didn't spread.) Thinking, well no one is catching it so whats the point of getting the injection. Now because of the lack of people getting the injection, (people not getting themselves or their children immunized). And because no one is getting immunized, it can spread more faster and alot of people are not immune to it - Making it reappear.
People build up resistance against some diseases and their immune system protects them against the disease in future infections.
There are many people that are immunized and vaccinated according to the advice of their health-care provider. There is a reason your health-care provider tells you what they do.
It is a virus and it is contagious. Most people living in developed countries have been immunized against it (mumps is one of the "M's" in the MMR vaccine) so will have some resistance and probably will not get it even if exposed. While immunization makes catching it less likely it is still possible to get even if you have had the shots. If you have not been immunized or if you have a problem with your immune system then it is highly contagious.
they was porsecuted
When large number of people suffer from particular disease as against low incidence of the disease found normally, you call it a out brake.
vaccinations prevents us from having an specific disease.
There are no diseases specific to red haired people.
Antibodies.As antibodies are produced, the body keeps a "record" of them and you will have developed an immunity to that specific virus in people with an otherwise healthy immune system. See more information below on how the immune system works.