After a break of two weeks, here is my latest Mind and Matter column in
the Wall Street Journal:
April 25 is World Malaria Day, designed to draw attention to the
planet's biggest infectious killer. The news is generally good.
Never has malaria, which is carried by the Anopheles mosquito, been
in more rapid retreat. Deaths are down by a third in Africa over
the past decade alone, and malaria has vanished from much of the
world, including the U.S.
As so often happens in the battle against disease, however,
evolution aids the enemy. The selection pressure on pathogens to
develop resistance to new drugs is huge. In recent weeks, the
emergence on the Thai-Myanmar border of malaria strains resistant
to artemisin, a plant-derived drug, have led to pessimistic
headlines and reminders of the setback caused by resistance to the
drug chloroquine, which began in the 1950s.