World Health Organization[edit]
According to the WHO, a probable case is[22]
a person with a fever, respiratory infection, and evidence of pneumonia or acute respiratory distress syndrome
and
testing for MERS-CoV is unavailable or negative on a single inadequate specimen
and
the person has a direct link with a confirmed case.
A person with a acute febrile respiratory illness with clinical, radiological, or histopathological evidence of pulmonary parenchymal disease (e.g. pneumonia or acute respiratory distress Syndrome)
and
an inconclusive MERS-CoV laboratory test (that is, a positive screening test without confirmation)
and
a resident of or traveler to Middle Eastern countries where MERS-CoV virus is believed to be circulating in the 14 days before onset of illness.
A person with an acute febrile respiratory illness of any severity
and
an inconclusive MERS-CoV laboratory test (that is, a positive screening test without confirmation)
and
the person has a direct epidemiologic-link with a confirmed MERS-CoV case.