Infectious Disease Hospital Hubs Act - Amends the Public Health Service Act to allow the Secretary of Health and Human Services (HHS), in an emergency or significant potential emergency which involves a specific infectious disease that requires the isolation and specialized treatment of patients, to award grants to states to improve surge capacity at hospitals designated by the state and enhance community and hospital preparedness. Allows HHS to award additional grants to compensate designated hospitals for unreimbursed costs for treating infectious disease patients or for damages for lost business activity or lost services attributable to the treatment of those patients.