Delhi Health Minister Saurabh Bhardwaj on Tuesday said there is a shortage of nearly 30 per cent of doctors and specialists at many hospitals, but no efforts have been made to fill these critical vacancies despite repeated requests to the lieutenant governor. He said excuses such as the unavailability of the chief minister and the lack of an NCCSA meeting, are being cited by the LG's office to delay appointment for these positions. Bharadwaj's statement came during a press meet here where he also discussed the series of measures taken by Delhi government to combat the spread of dengue. "We have requested that warnings and awareness announcements be made across all metro stations, bus stations and other public transport hubs to inform people about dengue prevention," the minister said. Emphasising that it is very important that all government hospitals in the city are fully equipped to handle dengue cases, Bhardwaj said he directed several actions to the health secretary but was uns