Ah! I love your "Science and Soul" publication!
I remember reading a similar article in the NYT a couple of years ago about the pesky mosquito and how it's affected mankind throughout time. Such interesting stuff. I enjoyed this and understand how one thought leads to another, and one article leads to more research, and pretty soon, we're spending Sunday afternoons (and many other hours) in contemplation of what others might not even consider contemplating! Writers - like lice -are a strange and amazing breed with very long lineages and impact on others, too! :)