It is scary and reasonably plausible. Not as much as 711 but if your fellow college teacher, with whom you share a common lounge where you spent time together cutting the rug, gets it, well, all teachers will go to quarantine and they will close the school, like Soochow University.
For 711 or Carrefour or traditional market, they alert you, to watch for symptoms.
I worry about going to the hospital. I live in a traditional market with crowds. My neighbors are young folk and work all over town. Our office compound has 3 different dangwei in site. I take the MRT daily. I worry and protect myself and hope for the best.