Peter Chew Formula for calculate Covid-19 Vaccine efficiency (2nd Edition) by Pe
15,91 €
Therefore, it is important to create a simple formula to calculate the efficacy of a covid-19 vaccine. The purpose of creating this calculation formula is to allow the public to calculate the efficiency of the covid - 19 vaccine by themselves, so that they can understand the effectiveness of the vaccine and decide to take the vaccine.
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![Produktbild - COVID-19 Vaccination Education App [2nd Edition] by Peter Chew (English) Paperba](https://i.ebayimg.com/thumbs/images/g/wO8AAeSwQ5xoHAiy/s-l140.jpg)
![Produktbild - COVID-19 Vaccination Education App [2nd Edition] by Peter Chew (English) Paperba](https://i.ebayimg.com/thumbs/images/g/FWoAAeSwJx1oDNSV/s-l140.jpg)
