The No. 2 killer in Africa by parasite, after malaria, is an organism called Entamoeba histolytica -- or "Eh" for short. It was discovered in 1873, the year it took the life of missionary-explorer David Livingstone, that great champion of British imperialism on what his countrymen called the Dark Continent. I know this because, when I returned home from reporting in the sub-Sahara, the same pathogen was drilling through the walls of my gut. It would colonize there for months, unbeknownst to me, absorbing my nutrients and spewing its toxins, as I grew weak and emaciated.Now, that's what I call a lead.
A skillful intruder, Eh can produce a population explosion in a very short time. While its plan of attack is complex and still not entirely understood, it seems to trick human defense mechanisms into thinking all is well in the homeland. (It achieves that by killing local immune cells, then hiding the evidence by eating the cells' corpses.) Unfortunately, the more virulent the strain, the more the parasite risks killing the host -- sometimes by invading the brain -- rendering everyone homeless. Nonetheless, the more I've learned about Eh, the more I admire its resourcefulness, its work ethic (talk about intestinal fortitude!), and its resolve to survive and propagate. It's a shame we couldn't just get along, that my ecosystem couldn't sustain us both.
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posted by allkindsoftime at 5:38 AM on October 21, 2008