Biobot changed their measurement methods after my November 15 post and was kind enough to reprocess historic samples with their new method. As a result, the graph of Boston-area COVID infections has changed:
![Graph of MWRA viral RNA levels vs COVID hospital beds](/2020/11/covid19-sewage-data-2/covid-data-combined-with-hospitalization_huc839f35a2b144a7494fdaf5e8462d575_134931_800x0_resize_box_3.png)
I stand by my conclusion that, basically, we’re in big trouble.