To give the cholera numbers some place among the horrifying 2010 Haiti earthquake and its aftermath, the earthquake killed 100,000 people on the day, and up to 300,000 people in the resultant chaos (presumably the cholera outbreak was part of that larger number.)

The rotation of the earth changed measurably from the effects of the earthquake as well.

Japan 3/11 earthquake killed "only" 18,000. Civil defense readiness, and earthquake and tsunami hardened infrastructure made a huge difference, as it is clear that the tsunami would have done far more damage without those two factors.

The rotation of the earth changed measurably from the Japanese earthquake as well. Calculations at NASA's Jet Propulsion Laboratory determined that the Earth's rotation was changed by the earthquake to the point where the days are now 1.8 microseconds shorter.

Another example: the Boxing Day earthquake and tsunami stills hold the modern title at 227,898 on the day, and 275,000 overall, because there was no civil defense readiness, or tsunami hardening at all.

A tragic story, well-known in Hawaii, is that the Pacific Tsunami Warning Center in Hawaii knew Boxing Day Tsunami was going to cause the damage it did, because they measured it in their monitoring buoys in the Pacific (!), but had no communication infrastructure to get the word to those impacted.

https://en.wikipedia.org/wiki/Pacific_Tsunami_Warning_Center All Hawaii boaters dear friends, even if they err to overcautious sometimes. We're happier out on the boat than on land watching our marinas get destroyed