The easing of Covid-19 related lockdown norms has led to crowding in some markets and other places, the Centre said on Saturday, as it urged states to ensure the "extremely important" five-fold strategy of Covid-19 appropriate behaviour, test-track-treat and vaccination to prevent the spread of the disease.

In a communication to all states and Union Territories (UTs), Union Home Secretary Ajay Bhalla also said that vaccination against Covid-19, in the present scenario, is critical to break the chain of transmission.