A year ago, while many Americans were finishing their holiday shopping and finalizing travel plans, doctors in Wuhan, China, were battling a mysterious outbreak of pneumonia with no known cause. Chinese doctors began to fear they were witnessing the return of severe acute respiratory syndrome, or SARS, a coronavirus that emerged in China in late 2002 and spread to 8,000 people worldwide, killing almost 800. The disease never gained a foothold in the U.S. and disappeared by 2004. Although the disease hasn’t been seen in 16 years, SARS cast a long shadow that colored how many nations — and U.S. scientists — reacted to its far more dangerous cousin, the novel coronavirus that causes COVID-19. When Chinese officials revealed that their pneumonia outbreak was caused by another new coronavirus, Asian countries hit hard by SARS knew what they had to do, said Dr. Amesh Adalja, a senior scholar at the Johns Hopkins Center for Health Security. Taiwan and South Korea had already learned the importance of a rapid response that included widespread testing, contact tracing and isolating infected people.The U.S., by contrast, learned all the wrong lessons. This country’s 20-year run of good luck with emerging pathogens —including not just SARS, but also the relatively mild H1N1 pandemic, Middle East respiratory syndrome, Ebola, Zika virus and two strains of bird flu — gave us a “false sense of security,” Adalja said. KHN’s in-depth examination of the year-long pandemic shows that many leading infectious disease specialists underestimated the fast-moving outbreak…