The Vaccine Rollout – Too Many Unknowns
World governments are trying to deal with the complexity of vaccinating enough of their populations to provide an adequate level of herd immunity to be able to declare that the COVID 19 pandemic is under control. Having a Darwinian health care system and a lack of federal leadership means the U.S. will most likely lag behind the rest of the world in vaccine rollout. Experts are guessing that anywhere from 70-90 percent of people need to be vaccinated to meet herd immunity efficacy .
One of the major problems that all countries face is the fact that no one really knows how the pandemic will play out, even under the best of vaccine rollout scenarios. In addition, there are many unknowns about how vaccines work and how the virus behaves.







