related_tweet: @jackiecassell @rob_aldridge @sangerinstitute @infectiousdz @genomicsengland @thelancetinfdis @bashh_uk yes, not sure but seems likely for syphilis. transmission from ambulant, reasonably well (even if not wholly asymptomatic) individuals, especially over a long time period, is a useful trick to evolve.
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  covid-19 already transmits easily in pre- or asymptomatic cases.