What does Partial immunity to a disease mean?

Question

what does partial immunity to a disease actually emcompass?
For example people of African origin having hereditary sickle cell anemia are less susceptible to malaria. Does that mean they are having partial immunity? How partial immunity are actually conferred by parasites and vaccines

Answer 1

Partial immunity mean an immunity developed after multiple bouts of the disease. A person develops enough immunity to prevent severe infection and mortality, but can still become ill. Moreover, even this limited immunity can be maintained only by frequent reinfection.
Malaria is a good example of a disease conferring partial immunity. No one knows the mechanism by which people eventually become partially immune to malaria.It may be related to the complexity of the parasite. Recent work has demonstrated that the malaria parasite expresses a repertoire of thousands of surface molecules, or antigens, which change constantly in the course of a single infection. The parasite therefore presents a moving target for the host immune system: by the time the host forms antibodies in response to one antigen, the parasite has already switched to a new one.

Answer 2

It should be passive not partial. Immunity is the body's ability to resist infection, afforded by the presence of circulating antibodies and white blood cells. Antibodies are manufactured specifically to deal with the antigens associated with different diseases as they are encountered.

" Active " immunity arises when body's own cells produce, and remain able to produce, appropriate antibodies, following an attack of diseases.

" Passive " immunity, which is only short lived, is within the growing cells inhibits antibody formation.

Answer 3

It means that you haven't gotten the full strain to be immune to it, like all vaccines do not provide full immunity. Your immune system builds up only a few antibodies, which yes will protect you but only if you have a strong and healthy immune system when you come in contact with the virus

Answer 4

I guess it means your immune system hasn't built up enough antibodies to completely fight off the infection. You would still be susceptible to the infection but the antibodies would do their best I'm sure. Forgive me. I'm not a DR. Just an educated guess.