The Centre has put out guidelines for states on enforcing lockdowns and containment zones in order to flatten the curve amid spiraling Covid cases. The rules say it is time for such restrictions when the positivity rate is 10 per cent or more for a week and more than 60 per cent hospital beds are occupied. States have been urged to go for an intensive, local and focused containment network focused on districts, cities and areas based on criteria specified by the Union Home Ministry.