In the 1889–1890 pandemic (possibly the origin of human coronavirus OC43), the virus spread around the world within the first six months. There were subsequent

In the 1889–1890 pandemic (possibly the origin of human coronavirus OC43), the virus spread around the world within the first six months. There were subsequent waves for one or two years. https://en.wikipedia.org/wiki/1889%E2%80%931890_pandemic https://en.wikipedia.org/wiki/1889%E2%80%931890_pandemic There hasn't been limited international travel for a long time.