1. A patient comes into the hospital complaining of having symptoms that looks like to be a streptococcal infection. When treated at the hospital it was determined the patient has streptococcus. However, after 3 days of being in the hospital the patient is now showing symptoms of having pneumonia. How is this possible? How did this pattern of infection take place? Talk about the immune system and the reasoning behind these diseases. 2. Please define what a biological vector is and a mechanical vector. Please give an example of each and how this can lead to someone being inflicted with a disease.

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