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Major countries and lineages represented among Montreal TB cases. The “top 10” countries of origin with the highest numbers of TB cases are shown and are stratified according to LSP-defined TB lineage. The upper panel consists of only the isolates identified as being IS6110 RFLP or spoligotype “unique.” The lower panel consists of isolates involved in chains of recent transmission (“clustered”). Note that the relative scales of the two panels differ.
