COVID-19 primarily targets the respiratory system, where it infects cells in the lungs. This is due to the presence of ACE2 receptors, which the virus uses to enter cells. However, research has shown that the virus can also affect other organs, including the gastrointestinal tract, where it may cause symptoms like diarrhea, and the heart, where it can lead to complications such as myocarditis. Additionally, the virus can enter the bloodstream, potentially affecting blood vessels and leading to clotting issues. Understanding these locations is crucial for recognizing the wide-ranging impact of COVID-19 on human health.