 Write an essay comparing both pathogenicity and virulence among microorganisms.  Show how microorganisms vary in both their pathogenicity and virulence using the opportunistic infections as examples.  Show how these characteristics influence the prevention and treatment for public health. Requirements  Essay should be a minimum of 500 words.  Be sure that your grammar, sentence structure, and word usage is appropriate. This means that you will have to edit your work yourself.  Use APA format, the Kaplan Writing Center, and review the document in Doc Sharing named ‘Writing Center Resources€