However, a civil surgeon at the hospital said that since he was critical from the beginning, the doctor had referred him to another hospital but they did not go there.
The drone was used to carry a blood unit in the area which is geographically difficult to traverse.
Patients suffering from haemophilia, thalassemia and sickle cell will be affected the most as blood transfusion is required regularly for such patients.
After the festival of Lights, Mumbai is facing a huge shortage of blood supply as very few blood donation camps were conducted in Diwali.
A team of doctors led by Dr. Shamee Shastry from the blood bank of Kasturba Medical College, Manipal identified a rare blood group called 'pp' or 'P null' phenotype. ABO and Rh D are the commonly typed blood group systems.