Notable changes have occurred since our last COVID-19 progress report . The Omicron variant has taken hold nationwide. The pace of booster inoculation has picked up but resistance to the original primary series persists. Local efforts to reduce exposure to the virus vary widely, creating confusion as to whether the end of the pandemic may finally be in sight.
This is another retrospective observational study, this one from England looking at the transmission of COVID-19 in both its alpha and delta variants to other adults. It helped me refine how I think about vaccines, let me share the findings and my thoughts.
The published literature on COVID now exceeds 211,000 papers, books, and documents, which include: 22,866 observational studies, 19,591 reviews, 1496 meta-analyses and 781 randomized control trials. These publications comprise the backdrop for our research and writing. The project began in the spring of 2020 based on a limited source of cumulative COVID-19 data and has broadened considerably. Here is what we have learned.