Diagnosis of infectious disease is nearly always initiated by medical history and physical examination. More detailed identification techniques involve the culture of infectious agents isolated from a patient. Culture allows identification of infectious organisms by examining their microscopic features, by detecting the presence of substances produced by pathogens, and by directly identifying an organism by its genotype.
diagnosis of infectious disease is nearly always initiated by medical history and physical examination more detailed identification techniques involve the culture of infectious agents isolated from a patient culture allows identification of infectious organisms by examining their microscopic features by detecting the presence of substances produced by pathogens and by directly identifying an organism by its genotype