As dengue cases get more widely reported across the state Chief Minister Mamata Banerjee has earned a fresh nickname - 'Mamatadidi MBBS'. She has taken on the doctor's role instructing people about which medicines to take and what to avoid. 'Didi' (elder sister as Banerjee is affectionately called) shows no sign of fatigue as she makes surprise visits to government and private hospitals holds meetings through the day with health department officials and civic agencies and briskly walks up to the podium earmarked exclusively for her at the state secretariat Writers' Buildings to brief the media. Local television channels have