A patient under investigation (PUI) is a person with the following characteristics:
PUIs should be evaluated in consultation with the state and local health departments. For more information, see CDC’s Interim Guidance for Health Professionals.
A confirmed case is a person with laboratory confirmation3 of MERS-CoV infection.
A probable case is a PUI with absent or inconclusive4 laboratory results for MERS-CoV infection who is a close contact2 of a laboratory-confirmed MERS-CoV case.