On January 16, 1867, Emperor Komei was not well as he had the flue, but he attended a Shinto ritual held in the Imperial Palace although his doctors stopped him from attending, on the following day (on 12th), he had a fever.
慶應2年12月11日（1867年1月16日）、風邪気味であった孝明天皇は、宮中で執り行われた神事に医師たちが止めるのも聞かずに参加し、翌12日に発熱する。