The Ebola virus scare, the Zika virus infection, and foodborne illnesses associated with a restaurant chain are examples of challenges to epidemiology. Compare the similarities and differences among these events. State at least one general principle that you can distill from these episodes.

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The shia sect of islam is primarily different from sunni islam in the belief that the first legitimate imam following muhammad was imam ali. unlike the three caliphs that succeeded muhammad, ali was part of muhammad's clan (related to him). major shia caliphates include the fatimid and safavid caliphates.  the answer will be option c. shia read more on