Scholars have often wondered about the cause of King Alaric's death. As recent as 2016, Francesco Galassi and his colleagues pored over all the historical, medical and epidemiological sources they could find about Alaric's death, and concluded that the underlying cause was malaria. For further information, see: "The sudden death of Alaric I (c. 370–410 AD), the vanquisher of Rome: A tale of malaria and lacking immunity." Francesco M. Galassi, Raffaella Bianucci, Giacomo Gorini, Giacomo M. Paganottie, Michael E. Habicht, Frank J. Rühli. European Journal of Internal Medicine June 2016 Volume 31, pp. 84–87. https://www.ejinme.com/article/S0953-6205(16)00067-4/abstract
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Bayless 1976, pp. 65–67. Bayless, William N. (1976). "The Visigothic Invasion of Italy in 401". The Classical Journal. 72 (1): 65–67. JSTOR3296883.