The human immune system plays a crucial role in fighting off COVID-19 infection. When a person is infected with the virus, their immune system begins an intricate process of defense. Initially, the innate immune response is activated, releasing proteins to neutralize the virus. Following this, the adaptive immune response develops by producing antibodies specifically targeting the virus. T cells also play a significant role in clearing the infection. However, in severe cases, an exaggerated immune response can lead to harmful inflammation. Understanding the immune response can aid in developing effective treatments.