"Earlier, vaccination was done separately. Now it is being done under the National Rural Health Missions, under which we are purchasing the bulk of the vaccines and passing them to state governments," Azad said.
"At the end of the year, the state government says that these are the vaccines which we have given. But there is no proof," he said.
"I personally feel that in certain areas where the vaccination is not getting desired effects, it is obvious that either the technique is faulty or the numbers are fudged," he said.
The health minister said that in order to check this grey area, he has asked his department of research to make a softcopy of the entire data.
"We should have the name of the child, father's name, village, mohalla, city and mobile numbers," he said, adding "these details should be made available on the net."