Review process is an important step in verification of diagnosis of an Epidemic:

The laboratory findings (for example, if the laboratory tests are inconsistent with the clinical and epidemiologic findings), can ask a qualified laboratorian to review the laboratory techniques being used. Secondly through review process investigators — clinicians and non-clinicians —can find it useful to visit one or more patients with the disease. If we do not have the clinical background to verify the diagnosis, bring a qualified clinician in team. Talking directly with some patients gives  a better understanding of the clinical features, and helps to develop a mental image of the disease and the patients affected by it.