Story here; an excerpt:
| DAYS SINCE SECOND DOSE | EFFECTIVENESS AGAINST HIGH VIRAL BURDEN INFECTIONS | |
|---|---|---|
| Pfizer-BioNTech shot | AstraZeneca shot | |
| 14 | 92% | 69% |
| 30 | 90% | 67% |
| 60 | 85% | 65% |
| 90 | 78% | 61% |
By roughly four and a half months after the second dose, Pfizer’s shot will probably be about on par with Astra’s at preventing infections with a high viral burden, said Koen Pouwels, an Oxford senior researcher who helped lead the study. There wasn’t a statistically significant difference in the Astra shot’s effectiveness over time.
