1. Trace the path taken by pathogens from various portals o

1. Trace the path taken by pathogens from various portals of entry, through the establishment of disease, and ending with their exit from various portals in the host.2. Summarize one example illustrating how microbes benefit human health. Can the removal of microbes actually lead to disease development?3. There are some who believe that HIV does not cause AIDS. Have all of Koch’s postulates been met for HIV as the causative agent that leads to the development of AIDS? Cite evidence to explain your answer.4. Conduct additional research and answer the following: Discuss what policies are in place at local, state, and federal government levels to prohibit the spread of disease in the case of a pandemic.