Scenario 1: Miguel just moved to a new area and started attending a new school. While at school, he is exposed to Streptococcus pyogenes, the bacterium that causes strep throat. How will his innate immunity protect his body from this pathogen? Describe two examples of first line defense responses. Describe one example of a second line defense response. How might antibiotics impact Miguel’s immune response and overall health? Scenario 2: Marina is visiting her cousins. While there she is exposed to the varicella-zoster virus, the virus that causes chicken pox. Marina had been exposed to the varicella-zoster virus when she was young through the chicken pox vaccine. How will her adaptive immunity protect her body from this pathogen? Describe two examples of cells that will respond. If this was the first time Marina had been exposed to the chicken pox virus, how would the response be different? Marina received a chicken pox vaccine as a child. How does this factor impact Marina’s immune response and overall health? Lesson Connections Use what you learned from the lesson to answer the questions below. Compare two types of pathogens and how they can affect the body. Think about the steps the body will follow to destroy a pathogen. How do Scenario 1 and Scenario 2 differ from one another? Describe two strategies you can implement to stop or prevent infection from a pathogen.