The scenario presented in the question describes a case of a hemorrhagic fever. Given the symptoms of abdominal pain, hepatomegaly, and hemorrhagic manifestations in a photographer returning from Africa, along with the postmortem finding of intranuclear Torres bodies in the liver, this is indicative of an infection caused by a flavivirus, specifically Yellow Fever.
Yellow Fever is endemic to Africa, and its prevention is contingent on the administration of the 17D vaccine. The 17D strain is a live-attenuated virus vaccine that provides immunity against the Yellow Fever virus, making it crucial for travelers to endemic regions.
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Conclusively, the 17D vaccine would have been the preventive measure against the Yellow Fever, potentially averting the fatal outcome described in the scenario.
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