The 1889–90 flu pandemic originates in Russia.…
December 1889 CE
The pandemic is first recorded in Saint Petersburg, Russia in December 1889. In four months it will spread throughout the Northern Hemisphere.
Deaths peak in Saint Petersburg on December 1, 1889, and will peak in the United States during the week of January 12, 1890.
The median time between the first reported case and peak mortality is five weeks.