The new covid-19 mutants usually have a higher transmission rate, the maximum positive rate must be lower to ensure that the undetected virus covid-19 carriers are low and the country is controlled.
Different countries may face high infection with different covid-19 mutants, Therefore, each country must have a specific maximum positive rate based on its country's covid-19 mutant.
This study will create a general formula to determine the maximum positive rate for each country based on its country's covid-19 mutant.
2nd edition has some updates, such as giving some information about Omicron. Therefore, 2nd edition focuses on updating the latest information
