Three lions recovering slowly, efforts on to help them recuperate from Covid:Zoo official The three infected lions at the Arignar Anna Zoological Park (AAZP), popularly known as the Vandalur Zoo here, are responding "very slowly" to treatment and all efforts are being taken to help them recuperate, a senior official at the zoo said on Monday. Of the 14 lions in the Zoo, 3 lions are responding to treatment very slowly. (PTI) 20:21 (IST) Jun 14 Southern Railway delivers over 5,000 MT medical oxygen to Tamil Nadu Over 5,000 metric tonnes of liquid medical oxygen (LMO) has been delivered to Tamil Nadu through Oxygen Express trains since last month, the Southern Railway said on Monday. Tamil Nadu received the first oxygen supply through an express train on May 14 here from Durgapur in West Bengal. (PTI)