COVID-19

Brief on COVID-19 Pandemic

• March 3 2020
  
• March 5 2020
  
• March 12 2020
  
• March 15 2020
  
• March 19 2020
  
• April 23 2020
  

Shiny Apps

Estimation of Reproduction Number and Prediction for COVID-19 Epidemic

Vaccine effects

The manuscript Real-World COVID-19 Vaccine Protection Rates against Infection in the Delta and Omicron Eras (by Zhu, Y., Gu, J., Qiu, Y. and Chen, S. X.) estimates the real-world protection rates of vaccination (VPRs) against the SARS-Cov-2 infection. Main results are:

• The average VPR of the full vaccination was 82% (SE: 4%) and 61% (SE: 3%) in the pre-Delta and Delta-dominated periods, respectively.
  
• The Omicron variant reduced the average VPR of the full vaccination to 39% (SE: 2%).
  
• The booster dose restored the VPR to 63% (SE: 1%) which was significantly above the 50% threshold in the Omicron-dominated period.