Compare passive immunity to active immunity?

Answer 1

Active Immunity - Vaccines are used for health purposes to expose our bodies to a particular antigen. These antigens are usually killed or severely weakened to decrease their potency. After destroying these pathogens, the body stores some T cells as memory cells, due to the fact they code for a particular antigen and can be when needed. This memory in T cells can be a means of artificially acquiring immunity while a genuine attack by a pathogen is a naturally acquired type of immunity.

Passive Immunity - This is where immunity to particular antigens as a result of genetic traits passed on from parents rendering the offspring immune to a particular pathogenic threat.

Answer 2

Active immunity is acquired from vaccinations or from infection against a pathogen. The next time you encounter the same pathogen your body has built memory against it and will be able to fight it much more efficiently.

Passive immunity is primarily through a mother to a baby or fetus. Through the placenta the mother transfers her immunity (IgG antibodies) to her fetus. Also through breast milk she can although the placenta is much more so. The baby has her/his immunity from the mother but it only lasts a few months because the baby hasn't developed his/her own immunity.

Answer 3

Active immunity is immunity which is developed in response to having had an illness. Passive immunity is immunity which is developed as a result of a vaccine. Most vaccines use dead organisms, so the risk to the person is less than if they had contracted the actual disease.

Answer 4

Passive immunity is acquired through transfer of antibodies or activated T-cells from an immune host, and is short lived, usually lasts only a few months,whereas active immunity is induced in the host itself by antigen, and lasts much longer, sometimes life-long. The diagram below summarizes these divisions of immunity.

Answer 5

Active immunity is generated by your body. So you get active immunity as a result of infections or due to vaccines. Passive immunity is not generated by your body. Here the antibodies are to be supplied. Child gets the antibodies from mother. Alternately you get the antibodies via injections. The effect of active immunity is long lasting. The effect of passive immunity is short lived. So the active immunity is considered as better. The passive immunity has one advantage. It is available with immediate effect, while it takes about two to three weeks, before the effects of active immunity is available.

Answer 6

Active immunity produces antibodies themselves, but the passive immunity does not.

Answer 7

yes