usda-h1-surveillance
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# Downloaded USDA influenza A virus in-swine surveillance data from octoflushow (flu-crew.org) on April 3rd, 2023. # The data contained clade assignment information for all H1 detections in the US between 2009 and 2021 (see swine-surveillance-data_2021_H1.txt). # h1_ratio.R: R script that determines and plots the ratio of H1pmd09 detections to all H1 detections by season. # h1-pdms-ratio.pdf: The resulting figure (Figure 3B).