EMA’s human medicines committee (CHMP) has started a rolling review of COVID-19 Vaccine (Vero Cell) Inactivated, developed by Sinovac Life Sciences Co., Ltd. The EU applicant for this medicine is Life'On S.r.l.
The CHMP’s decision to start the rolling review is based on preliminary results from laboratory studies (non-clinical data) and clinical studies. These studies suggest that the vaccine triggers the production of antibodies that target SARS-CoV-2, the virus that causes COVID-19, and may help protect against the disease.
EMA will evaluate data as they become available to decide if the benefits outweigh the risks. The rolling review will continue until enough evidence is available for a formal marketing authorisation application.
EMA will assess the compliance of COVID-19 Vaccine (Vero Cell) Inactivated with the usual EU standards for effectiveness, safety and quality. While EMA cannot predict the overall timelines, it should take less time than normal to evaluate an eventual application because of the work done during the rolling review.
EMA will communicate further when the marketing authorisation application for the vaccine has been submitted.

How is the vaccine expected to work?
COVID-19 Vaccine (Vero Cell) Inactivated is expected to prepare the body to defend itself against infection with SARS-CoV-2. The vaccine contains SARS-CoV-2 that has been inactivated (killed) and cannot cause the disease. COVID-19 Vaccine (Vero Cell) Inactivated also contains an ‘adjuvant’, a substance that helps strengthen the immune response to the vaccine.  When a person is given the vaccine, their immune system identifies the inactivated virus as foreign and makes antibodies against it. If, later, the vaccinated person comes into contact with SARS-CoV-2, the immune system will recognise the virus and be ready to defend the body against it.