Back in February 2020, when the world was only just waking up to the realization that the coronavirus was on its way to becoming a full-on pandemic, the Diamond Princess cruise ship made headlines after it was forced to quarantine outside of Tokyo as a staggering number of its passengers began testing positive for COVID-19. The number of confirmed cases skyrocketed to over 600 passengers, which prevented the more than 3,000 people on board from leaving the ship as health officials scrambled to contain the hot spot. To make matters worse, infected passengers had left the ship before the quarantine and were now spreading the virus on the mainland.