Dr. Wu certainly isn't a household name in the US, or even in China, the nation he adopted as his home. But he should be, especially now: The groundbreaking work he conducted in fighting an outbreak of the deadly pneumonic plague in 1910 -- a pandemic that killed a stunning 99.9% of its victims, and had already led to over 60,000 deaths in the months before Dr. Wu took charge -- likely saved millions of lives, and established many of the basic public health procedures and innovations that have been used around the world to fight pandemics ever since, including our present one, Covid-19.