The first plague pandemic began in the early sixth century and lasted until the later eighth century. The second pandemic (which included the Black Death) began in the 1330s and lasted five centuries. A third pandemic began in 1894 and remains with us today ...
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1) Circa 600 AD - 800 AD.
2) Circa 1330 AD- 1830 AD.
3) Circa 1894 - 2023.
1) Circa 600 AD, the rise of Islam - the Islamic conquest & destruction of all of North Africa (from where its short boat trip to Spain) and Constantinople, the under belly of Europe.
2) Circa 1330 AD - 1830 AD, the rise of Islamic empires.
3) Circa 1894 AD and modern Islamic invasion of Europe ...
You do the math.
Double-check: is there evidence of Mass Death among Islamic countries right before, or during, those times?
...or are you suggesting immunological naievete in Europe, similar to what Native Americans went through when first exposed to European diseases?