Volume 30, Number 1—January 2024
Dispatch
Respiratory Viruses in Wastewater Compared with Clinical Samples, Leuven, Belgium
Figure 1
![Respiratory viruses measured in wastewater versus positive clinical samples, Leuven, Belgium, January 2021–December 2022: A) influenza virus; B) RSV; C) HMPV; D) PIV-1; E) PIV-2; F) PIV-3; G) PIV-4; H) AdV. Graphs indicate evolution of viruses detected in wastewater by an in-house–developed multiplex quantitative PCR respiratory panel (line graphs; dots represent individual measurements) and by weekly counts of PCR-positive tests detected at UZL (bar graphs). Plots were generated using R version 4.1.1 (The R Foundation for Statistical Computing, https://www.r-project.org) and the ggplot2 package version 3.3.5 (https://ggplot2.tidyverse.org). A larger version of this figure is available at https://wwwnc.cdc.gov/EID/article/30/1/23-1011-F1.htm. AdV, adenovirus; Ct, cycle threshold; HMPV, human metapneumovirus; PIV, parainfluenzavirus; RSV, respiratory syncytial virus; UZL, University Hospitals Leuven.](/eid/images/23-1011-F1.jpg)
Figure 1. Respiratory viruses measured in wastewater versus positive clinical samples, Leuven, Belgium, January 2021–December 2022: A) influenza virus; B) RSV; C) HMPV; D) PIV-1; E) PIV-2; F) PIV-3; G) PIV-4; H) AdV. Graphs indicate evolution of viruses detected in wastewater by an in-house–developed multiplex quantitative PCR respiratory panel (line graphs; dots represent individual measurements) and by weekly counts of PCR-positive tests detected at UZL (bar graphs). Plots were generated using R version 4.1.1 (The R Foundation for Statistical Computing, https://www.r-project.org) and the ggplot2 package version 3.3.5 (https://ggplot2.tidyverse.org). A larger version of this figure is available at https://wwwnc.cdc.gov/EID/article/30/1/23-1011-F1.htm. AdV, adenovirus; Ct, cycle threshold; HMPV, human metapneumovirus; PIV, parainfluenzavirus; RSV, respiratory syncytial virus; UZL, University Hospitals Leuven.