Abstract: Techniques for a user interface for pathogen analysis are provided. The user interface may include an interactive dendrogram that identifies a plurality of biological samples and their corresponding sequences. The biological samples of the interactive dendrogram may be arranged based on a degree of similarity between nucleotide sequences of the biological samples. In response to a selection of biological sample, the interactive dendrogram may identify a cluster of biological samples. Each biological sample of the cluster can be identified based on a determination that a number of variations between the sequences of the biological sample and the selected biological samples are under a predefined threshold. The user interface may also include a similarity matrix that identifies a number of variations between sequences of two biological samples selected from the interactive dendrogram.