related_tweet: @vipintukur a small question if convalescent plasma doesn't help therapy, how do we rely upon sera for assessment of neutralising antibodies generated from vaccine? 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  please elaborate