An additional bonus we get by wearing masks is added protection from other pathogens. Let's assume you were walking across campus, forgot to put on your mask, and passed a person without their mask on.  If that person was had a bacterial respiratory infection (not COVID as it is a virual infection), indicate how a pathway that the could be picked up by the Lymphatic System.  Once inside the Lymphatic System describe where the adaptive immune response is likely to begin and how T cells are activated.

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