Delhi Metro is organising a campaign to raise awareness about the benefits of vaccination against Covid-19 at the DMRC's construction sites across the National Capital Region," it said.As part of this week-long campaign, a series of 'nukkad nataks' (street plays) targeting small groups, with a limited number of workers are being organised at the construction sites from last Wednesday, officials said.Professional artistes who work in commercial movies, TV shows and web series have been roped in to perform, the statement said."Since most of the workers come from states like Uttar Pradesh, Bihar, Madhya Pradesh and Jharkhand, the shows are designed and written in different dialects spoken in rural parts of these states so that the workers.