related_tweet: this is from sept to about march. "cold and flu" season. 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  if 4 coronaviruses cause the 'common cold'. that means your "covid" number are way off. the tests from what i know so far, only check for 'coronavirus'.. leaving a positive test. 1/5 of a chance of being 'covid19'