Before revision:  By February 6 , we found 22 listings offering a COVID-19 vaccine . Three listings offer the Pfizer/BioNTech vaccine, one listing the AstraZeneca/Oxford vaccine, and three listings a fabricated proof of vaccination against COVID-19.
After revision:  By February 6 , we found 22 listings offering a COVID-19 vaccine , seven of which offering officially approved vaccines. The number of currently active listings is 11, including one listing selling the Pfizer/BioNTech vaccine, one listing the AstraZeneca/Oxford vaccine, and three listings a fabricated proof of vaccination against COVID-19.