Climate factors influence seasonal influenza activity in Bangkok, Thailand

Fig 4. Association between meteorological factors and influenza virus. Correlation analysis of (A) influenza A(H1N1)pdm09 virus, (B) influenza A(H3N2) virus, (C) influenza B virus, and (D) all influenza viruses against climate variables and in the presence of co-circulating viruses at different lag times. Spearman’s rank cross- correlation coefficients ranged from -1 to 1. Negative value equates to negative association as indicated by red circles, and positive value equate to positive association as indicated by blue circles. Circle size represents the magnitude of the p-value. Color intensity represents the strength and weakness of the correlation (right scale). Temp, mean temperature; RH, relative humidity; RF, rainfall. https://doi.org/10.1371/journal.pone.0239729.g004 PLOS ONE Climate factors influence seasonal influenza activity in Bangkok, Thailand PLOS ONE | https://doi.org/10.1371/journal.pone.0239729 September 29, 2020 9 / 15