coronavirus infection which manifests itself in the respiratory tract, central government on Friday said that it has been working constantly on all the fronts to mitigate of air pollution.Expressing concern over the pollution level in the northern parts of the country especially national capital Delhi, Prakash Javadekar, Minister for Environment, Forest and climate Change said that the government is working towards abatement of air pollution by working at the source level, be it industries or thermal power stations, vehicular pollution, construction and demolition waste or stubble burning, which are the major sources of pollution generation.