TB & Outbreaks Week
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Infectious Disease
Findings from D. Raoult and co-researchers advance knowledge in infectious disease
April 1st, 2008
According to a study from Marseille, France, "Three distinctly different lineages of head and body lice are known to parasitize humans. One lineage includes head and body lice and is currently worldwide in distribution (type A)." "The other 2 (types B and C) include only head lice and are geographically restricted. It was hypothesized that head louse phylotypes were exchanged only recently, after European exploration and colonization (after Columbus). To determine which louse type or types were found in the Americas before European colonization, we used polymerase chain reaction in 2 laboratories to amplify DNA from 2 genes (Cytb and Cox1) belonging to 1000-year-old...
Source: TB & Outbreaks Week (2008-04-01)
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