Otto's Allusion To The Dog Star Summary

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Frederick’s move into the Alban hills did not stop the epidemic, however, to the point that by mid-summer there were “scarcely any left who did not feel the deliberating effects of the burning heat and the unwholesome air.” As a result, Frederick retreated to Germany, crossing the Alps by the end of September. One interesting point that should be made about Otto’s account is his mention of the Dog Star. This may just be a literary conceit on his part: in Homer, Sirius is described as an evil star and the “harbinger of fevers”. More intriguingly, Otto’s allusion to the Dog Star may also reflect indigenous Italian knowledge about malaria infection. As Italian malaria expert Paula Corti has pointed out, Italian peasants traditionally associated …show more content…

According to the Otto of Freising, shortly after Frederick conquered Rome and installed his puppet pope Paschal III, “a severe pestilence attacked the army and in large measure destroyed it”. Historians have traditionally accepted that this was a malaria epidemic given its location (the malarious environs of Rome) and its timing (August 2nd). In a recent work, however, John Freed has argued against malaria as a causal agent: although he admits that one of the epidemic’s symptoms was high fever, he noted that the epidemic shortly followed a torrential downpour, which points to a gastrointestinal infection from polluted water supplies. This rules out malaria, according to Freed, as “the eight-day incubation period of malaria precludes it from being the primary cause of the epidemic that began killing a large number of men within hours of the storm.” The problem with Freed’s argument is that most diarrheal diseases also have their own incubation period. Typhoid, the gastrointestinal infection most closely associated with epidemics in marching armies, shows no symptoms from between to six to thirty days after exposure, and bacterial dysentery requires 2 to 10 days to show symptoms. In all likelihood, the rainstorm was entirely unrelated to the fever outbreak, and was remembered mainly because of the medieval

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