When the human body is invaded by foreign microorganisms such as bacteria and vi

When the human body is invaded by foreign microorganisms such as bacteria and viruses, it produces an immune response. Choose one example of a bacterium or virus to discuss.
What actions does the body produce in its immune response to invasion by the particular bacterium or virus you selected? Explain your answer.
Would active or passive immunity be more effective against this bacterium or virus? Why?