You are child - like in your grasp of anything more complicated than 2 + 2. COVID and the flu are very similar viruses. Not sure why you are struggling with this.No they haven’t. Influenza and coronavirus are two completely different types of viruses. They aren’t “different strains”. Educate yourself to the basic facts before making statements as to what national policy should be.
Find out the similarities and differences between coronavirus disease 2019 (COVID-19) and flu (influenza), and read ways to prevent getting these diseases.