New Delhi, April 2 -- Hospitals and dispensaries across the city saw long queues outside Covid-19 vaccination centres on Thursday, when the city's immunisation drive was opened up to all those above the age of 45. To ensure maximum turnout, Delhi government-run hospitals are informing patients arriving for doctor consultations about the inoculation drive and urging them to take the jab, and also inviting residents' welfare associations to book bulk slots for entire societies....