In no less than 150 words list the currently available SARS-CoV2 vaccines and the companies that make them. Describe the types of vaccines and how they generate immunity to the SARS-CoV2. Pick one vaccine study and describe numbers and types of volunteers as well as the outcomes of the vaccine trial that lead to the FDA’s decision to grant emergency use authorization and final full approval. Describe the defenses that your body must enlist to overcome this viral infection. How would this process be different if you had gotten a vaccine against COVID-19? Cite references (APA format).