Natural immunity is acquired from exposure to the disease organism through infection with the actual disease. Vaccine-induced immunity is acquired through the introduction of a killed or weakened form of the disease organism through vaccination.
Natural Active Immunity .An active immunity example is when someone is able to very easily fight off a common cold because they have previously had a common cold and their body has antibodies to the virus that causes the common cold
Active Immunity
Active Immunity results when exposure to a disease organism triggers the immune system to produce antibodies to that disease. Active immunity can be acquired through natural immunity or vaccine-induced immunity.
Natural immunity is acquired from exposure to the disease organism through infection with the actual disease.
Vaccine-induced immunity is acquired through the introduction of a killed or weakened form of the disease organism through vaccination.
Either way, if an immune person comes into contact with that disease in the future, their immune system will recognize it and immediately produce the antibodies needed to fight it. Active immunity is long-lasting, and sometimes life-long.
Passive Immunity
Passive immunity is provided when a person is given antibodies to a disease rather than producing them through his or her own immune system.
Pregnant woman wearing protective face mask in blooming park
A newborn baby acquires passive immunity from its mother through the placenta.
People can also get passive immunity through antibody-containing blood products such as immune globulin, which may be given when immediate protection from a specific disease is needed.
The major advantage to passive immunity is that protection is immediate, whereas active immunity takes time (usually several weeks) to develop. However, passive immunity lasts only for a few weeks or months. Only active immunity is long-lasting.
From sources
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