The Louse That Halted an Army in Russia BY CESAR CHELALA
The disastrous effects of the Russian invasion on Napoleon Bonaparte’s army are well known. Less widely known are the reasons for the defeat of Napoleon’s Grand Army. Although Russian resistance, brutal weather and the lack of food and water decimated the French army, new genetic evidence proves that Pediculus humanus, otherwise known as body lice, had a key role in the debacle. Years ago, researchers led by Dr. Didier Raoult unearthed 2 kg of material containing bone fragments, clothing remnants, and segments of body lice from soldiers buried in a mass grave in Vilnius, the capital of Lithuania. Analysis of the material proves that almost one-third of those buried there were affected by louse-born infections such as typhus and trench fever. Raoult and his colleagues from the University of the Mediterranean, Marseille, France, studied segments of body lice as well as the dental pulp from soldiers’ teeth. The dental pulp revealed DNA from Bartonella quintana and Rickettsia prowazekii,...