This article focuses on COVID-19 during different times, from 2019 to 2024. Which include the background of COVID-19, structures, prevention spread ways and vaccines. Introducing these things about COVID-19 can help people know more about this various, although COVID-19 does not affect humans as much as it used to, and can help people know what got improved during the COVID-19 time, such as the vaccine. By reading this article, people can know more about the details of COVID-19 and can also know more ways to protect themselves. Also, readers can know different kinds of the variant with time goes then appears in the world, and development in the vaccine. This paper explores COVID-19's impact on humanity, the evolution of the virus, and advances in vaccines and treatments, providing insights into the pandemic's progression and response.