According to Wikipedia, "The third Cholera pandemic was the third major outbreak of Cholera originating in India in the ninteenth century that reached far beyond its borders, which researchers at UCLA believe may have started as early as 1837 and lasted until 1863." More than 1 million people in Russia died of cholera, in London over 10,000, in all of Great Britain 23,000, the cholera pandemic was considered to have the highest number of fatalities of the 19th-century epidemics. I feel like this is not only relevant to The Tenant of Wildfell Hall, but also incredibly relevant given the 2020 Covid-19 pandemic claiming nearly 1.5 million lives worldwide and with no end in sight, it looks like it'll be getting worse.

Well...looks like Paul from the grocer got it, Meg says he's not doing well. Looks like they're not taking much crop this year because of cholera. I thought that it would be fine in a couple of weeks, just like the flu they said. Well it's getting worse. I don't know if we'll be able to keep the farm running with the massive drop in income, I don't know if I'll be able to handle it if Rose or Fergus starts coughing. Maybe it's best to keep your distance for a while, just until we get back on our feet and all of...this normalizes.

“1846–1860 Cholera Pandemic.” Wikipedia, Wikimedia Foundation, 18 Nov. 2020, en.wikipedia.org/wiki/1846%E2%80%931860_cholera_pandemic.