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Lucky Charms cereal, I refuse to pay £7 in House of Fraiser for it.
Why go through all that malarky when you can just get the numbers of some lottery wins?
However it is widely accepted that the Plague refers to the Bubonic Plague, also the plague wasn't a single widespread outbreak, but hundreds of smaller localised outbreaks across Europe, Asia and the Mediterranean. Some may well have been Haemorrhagic fever, but as those outbreaks are relatively short and extremely localised it is doubtful that it alone could have travelled across such a vast area.
Smallpox would also explain the prevalence of the CCR5 protein in Europeans.
There were hundreds of unconnected extremely localised outbreaks spreading northwards through Europe over a couple of years? I think that's too coincidental.