Japan plans to collect data from people who become infected with the novel coronavirus even after they receive vaccinations to assess how vaccines may help prevent the spread of the virus, sources close to the matter said Sunday.

Inoculations are expected to start in Japan possibly in February. The health ministry will create a system to gather vaccination records of all infected people by adding checkboxes to a document that doctors are required to submit to public health centers when they confirm coronavirus infections, the sources said.

The formats for reporting rubella and measles, other major communicable diseases, also have checkboxes for vaccination records.