effectiveness
| Thread | Replies | Views | Activity | |
|---|---|---|---|---|
| Study shows dramatic decline in effectiveness of all three COVID-19 vaccines over time in the US | 
              
                 | 
          14 | 1047 | 12 November 2021 | 
| Thread | Replies | Views | Activity | |
|---|---|---|---|---|
| Study shows dramatic decline in effectiveness of all three COVID-19 vaccines over time in the US | 
              
                 | 
          14 | 1047 | 12 November 2021 |