But 28 of these patients have already recovered or have been discharged after testing negative for COVID-19 in subsequent tests, the health department said.
Ajit Pawar said information available showed that those who had taken both doses of the COVID-19 vaccine had also got infected with the Omicron variant.
What raised concerns among officials is that thousands of people had attended the three-day Akhil Bharatiya Marathi Sahitya Sammelan from December 3 to 5.
Four of them were kept in the hospital's Intensive Care Unit with oxygen support and they were also stable, civil surgeon Dr Kailas Pawar said.
The district collector of Aurangabad had recently issued an order to the petrol dealers to check the vaccination certificates of the people visiting the pumps to fill fuel in vehicles.