How are different active and passive?
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.