Acquired Immunity

Active immunity is when your B cells encounter antigens and produce antibodes against them.

• Naturally Acquired during bacterial and viral infections
• Artificially Acquired when we receive vaccines

Passive immunity is obtained by plasma cells and antibodies obtained from serum of an immuane human or animal donor.

• Naturally Acquired when the mother's antobodies cross the pacenta and enter the fetal circulation and after borth during breastfeeding.
• Artifically Acquired when one receives immune serum.