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. 2020 Mar 18;12(3):331. doi: 10.3390/v12030331

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) Cluster size distribution of HIV-1 transmission networks. The cluster size distribution of transmission networks consisted of 101 sequences that were linked as pairs, 15 clusters of 3 linked sequences, 4 clusters of 4 linked sequences, 1 cluster of 5 linked sequences, 1 cluster of 11 linked sequences and 1 cluster of 15 linked sequences. (b) Transmission pairs with phylogenetic evidence for the direction of HIV-1 transmission. The blue colored circles represent sequences that are linked to one another with phyloscanner scores (%) showing support for transmission in either direction between individual sequences. Source–recipient pairs that had phyloscanner scores >60% for linkage and >60% for one direction were considered highly supported.