In the first round, 14,000 health workers would be inoculated.
In the second phase, field staff engaged in carrying out Covid control programme would be vaccinated and it would cover those from police, revenue and local administration departments.
In the third, those above 50 and also those having complaints of diabetes, hypertension and cancer would be vaccinated.
Transporting the vaccines from Puducherry, as soon as it made available by the Centre, to these distant pockets would be practically impossible, particularly in maintaining them in cold storage,he said.
Narayanasamy said he had requested prime minister Narendra Modi at the video conference with Chief Ministers on Monday that political leaders, ministers and those in public life also be brought under the first phase for inoculation as it would set an example and give people the confidence in the vaccines.
Already two rounds of dry runs were conducted to ensure full logistics and preparedness of the Health department to implement vaccination once the vials were available from the Centre, he added.
Modi has said India will launch its COVID-19 vaccination drive on January 16.