because i am smooth brain i am trying to understand
https://www.sciencedirect.com/science/article/pii/S1931312822005728
Viruses that replicate in the human respiratory mucosa without infecting systemically, including influenza A, SARS-CoV-2, endemic coronaviruses, RSV, and many other “common cold” viruses, cause significant mortality and morbidity and are important public health concerns. Because these viruses generally do not elicit complete and durable protective immunity by themselves, they have not to date been effectively controlled by licensed or experimental vaccines.
What is lord fauci trying to say about #SafeAndEffective?
There are viruses that do not trigger an immunization response when they infect you so you need to be vaccinated if you want to prevent or lower the risk of reinfection.
Just as expected
There is no "terrain theory". You don't even know what a scientific theory is.
Blogs and YouTube videos are no substitute for scientific work.