Get What Is Natural Active Immunity US. In biology, immunity is the capability of multicellular organisms to resist harmful microorganisms. Typically, a bacteria or virus enters an organism and starts causing damage through its reproductive activities.
In the former, the host is exposed to the vaccine (either reports on natural active immunity mounted by fishes are very rare.
Typically, a bacteria or virus enters an organism and starts causing damage through its reproductive activities. Active immunity is a resistance to disease through the creation of antibodies by the immune system. Cells involved in active immunity are t cells (cytotoxic t cells, helper t cells, memory t cells the first exposure leads to what is called a primary response. Active immunity occurs naturally in a person while passive immunity is triggered by an external force.