From the paper: "Interpretation: Breakthrough Delta variant infections are associated with high viral loads, prolonged PCR positivity, and low levels of vaccine-induced neutralizing antibodies, explaining the transmission between the vaccinated people. Physical distancing measures remain critical to reduce SARS-CoV-2 Delta variant transmission."
The main point seems to be that the Delta variant is really dangerous. The words "patients" and "co-workers" do not appear in the study.
But it's a pre-print, so it hasn't been peer reviewed yet.
From the paper: "Interpretation: Breakthrough Delta variant infections are associated with high viral loads, prolonged PCR positivity, and low levels of vaccine-induced neutralizing antibodies, explaining the transmission between the vaccinated people. Physical distancing measures remain critical to reduce SARS-CoV-2 Delta variant transmission."
The main point seems to be that the Delta variant is really dangerous. The words "patients" and "co-workers" do not appear in the study.
But it's a pre-print, so it hasn't been peer reviewed yet.
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3897733