VACCINE BOOSTER EFFECTIVENESS (VE) for DELTA and OMICRON (meta-analysis 8 studies)
▶️ For symptomatic infection :
- VE against Delta peaked at 91.8% after 8 weeks, then declined to 76.5% after 24 weeks.
- VE against Omicron ...
H/t @atranscendedman
2) ...showed a non-linear trend, peaking at 67.3% after 8 weeks but declining to 27.1% after 25 weeks.
▶️ For hospitalisation :
- VE against Delta reached a peak of 96.0% at 8 weeks, decreasing to 93.3% after 20 weeks.
- VE against Omicron, peaked at 90.8% at 4 weeks ...
3) ... then decreased to 73.4% after 25 weeks.
▶️ For deaths :
- VE against Delta was stable, reaching 95.1% at 8 weeks and 90.6% at 20 weeks.
- VE against Omicron. Unfortunately, there were not enough studies to evaluate VE trends for death.
4) The text notes that the early protection levels were lower against Omicron compared to Delta, and the VE decrease over time was stronger for the Omicron variant across the studied outcomes.
Thanks for reading 🙏
VACCINE BOOSTER EFFECTIVENESS (VE) for DELTA and OMICRON (meta-analysis 8 studies)
▶️ For symptomatic infection :
- VE against Delta peaked at 91.8% after 8 weeks, then declined to 76.5% after 24 weeks.
- VE against Omicron ...
H/t @atranscendedman
2) ...showed a non-linear trend, peaking at 67.3% after 8 weeks but declining to 27.1% after 25 weeks.
▶️ For hospitalisation :
- VE against Delta reached a peak of 96.0% at 8 weeks, decreasing to 93.3% after 20 weeks.
- VE against Omicron, peaked at 90.8% at 4 weeks ... 3) ... then decreased to 73.4% after 25 weeks.
▶️ For deaths :
- VE against Delta was stable, reaching 95.1% at 8 weeks and 90.6% at 20 weeks.
- VE against Omicron. Unfortunately, there were not enough studies to evaluate VE trends for death. 4) The text notes that the early protection levels were lower against Omicron compared to Delta, and the VE decrease over time was stronger for the Omicron variant across the studied outcomes.
Thanks for reading 🙏
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