Flea phylogenetic trees constructed with (A) nuclear 28S and (B) mitochondrial COII markers.

<p>Sequences obtained in the present study are coloured (red for Tanzania, purple for Reunion Island). Only bootstrap supports >70% are shown (black dots). Genbank accession numbers are indicated. When several sequences obtained from different fleas showed 100% sequence identity, only one of them was written with the number (N) of identical haplotypes between brackets. Sequences obtained from three cat fleas (<i>Ctenocephalides felis</i>) sampled in the house of a murine thyphus human case were included in the analysis.