How many reviewers for Vaccine X?

How many reviewers for Vaccine X? - (VX)   Vaccine: X is the open access companion journal of Vaccine and has the same aims and scope. The journal offers authors who want to publish in a gold open access journal the opportunity to make their work immediately and permanently accessible. Vaccine: X publishes high quality science across all disciplines relevant to the field of vaccinology - all original article submissions across basic and clinical research, vaccine manufacturing, history, public policy, behavioral science and ethics, social sciences, safety, and many more...