Fig. 2.

Time-calibrated phylogeny of the Lassa virus strains, gathering 144 sequences belonging to lineages IV described in Guinea. The tree shows the partial glycoprotein precursor (888 nt). Posterior probabilities are coded as follows: 0.7, green dots; 0.80 to <0.85, purple-blue dots; > 0.97, red dots. Scale axis represents the time in years. The sequences are deposited in GenBank under the accession numbers MW776596-MW776599 (see Table 1). Detailed information about the sequence names is available in the supplementary table. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)