claim: long-term covid-19 containment will be shaped by strength and duration of natural , vaccine-induced immunity
evidence_1: in the most recent paper, the researchers used a simple model to project the future incidence of covid-19 cases  and the degree of immunity in the human population  under a range of assumptions related to how likely individuals are to transmit the virus in different contexts.", "the researchers used a simple model to project the future incidence of covid-19 cases  and the degree of immunity in the human population  under a range of assumptions on host immune responses following natural infection or vaccination.", 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  "a new study led by princeton researchers suggests that the impact of natural and vaccine-induced immunity will be key factors in shaping the future trajectory of the global coronavirus pandemic, known as covid-19.")