The first cholera pandemic reached Vietnam from Siam in July 1820; the royal archives recorded 206,835 deaths.
Epidemic
Cholera epidemic of 1820
- July 1820
- Southeast Asia
Meanwhile, elsewhere
- 1789 – 1799French RevolutionEurope
- 17th century – 19th centuryAge of EnlightenmentEurope
- 1845 – 1852Great Irish FamineEurope
- 1815 – 1871Unification of ItalyEurope
- 24 June 1812French invasion of RussiaEurope
- 1839 – 1842First Opium WarEast Asia
- 30 April 1803Louisiana PurchaseNorth America
- 18th century – 19th centuryRomanticism