Investigating the Return Possibility of COVID-19 Mutated Strains and Role of Vaccination in Present and Future

The document discussed the impact of Covid-19 vaccinations, which began in 2021, on reducing the severity of the disease despite the emergence of new virus strains that increased death rates after 6 months. While some researchers advised against additional vaccine doses due to antigenic changes, countries like Iran continued their vaccination efforts. In contrast, the U.S. and European nations recommended vaccinations primarily for high-risk individuals. The study highlighted the ongoing threat of dangerous mutations and emphasized the importance of ensuring vaccine compatibility with new viral antigens to maintain effectiveness in combating the virus. Vaccination remained crucial for future virus management.