In June, military researchers in the United States announced that a COVID-19 vaccine would be ready for testing on humans before the end of the year. That same month, The Lancet, the prestigious medical journal, announced a new approach to fight malaria.
The mosquito-borne disease infected an estimated 216 million people globally in 2018, claiming 405,000 lives. (In comparison, by July 21, 2020, there were more than 14.5 million COVID-19 cases, and more than 600,000 deaths.)
Deaths from malaria were halved in the past decade—a dramatic reduction in the annual death rate of a scourge that has plagued humankind since the dawn of history—but it has still killed millions, mostly in Africa and mostly children, since 2000.
One scientist has estimated malaria could account for the deaths o...