The government is considering prioritizing flu shots for older people and those with pre-existing conditions amid concern that demand for vaccinations could rise due to the novel coronavirus pandemic, sources familiar with the matter said Sunday.

As it is difficult to distinguish between the symptoms of influenza and COVID-19, the disease caused by the virus, more people than usual are expected to seek flu shots before the influenza season starts this winter.

The government believes it is important to set an order of priority to avoid confusion at medical facilities providing vaccinations, the sources said.