Covid-appropriate behaviour biggest social tool to break chain of transmission: Harsh Vardhan SECTIONS Last Updated: Apr 16, 2021, 07:00 PM IST Share Synopsis In order to encourage the public from following Covid-appropriate behaviour (CAB) in the quest for a coronavirus-free environment, the minister put out statistics that demonstrate the diligence of the general public along with the hard-work of healthcare and frontline workers. Union health minister Harsh Vardhan (File photo) People have adopted a casual approach towards the Covid-19 pandemic which is very dangerous, Union health minister Harsh Vardhan said on Friday and stressed that Covid-appropriate behaviour is the biggest social tool to break the chain of transmission.