... a vaccine will make its way on the scene right as we are forming a natural immunity to the disease. Big pharma and the CDC will tout the vaccine's effectiveness even though decreased infection rates will be a result of our natural immunity.

They have made the same arguments with measles, mumps, chicken pox, small pox, and even Polio. They claim that virtually all vaccines have been released at the same time as when the population was hitting a critical point of natural immunity, and that the vaccines were a money grab and a scam perpetuated by pharmaceutical companies.