Before revision:  The number of currently active listings is 11, including one listing selling the Pfizer/BioNTech vaccine, one listing the AstraZeneca/Oxford  vaccine, and 9 listings selling vaccines of unspecified type .
After revision:  The number of currently active listings is 34, including eight listings offering the Pfizer/BioNTech vaccine, one listing the AstraZeneca/Oxford vaccine, and 9 listings selling vaccines of unspecified type .