Comparative market analysis is an examination of the prices at which similar properties in the same area recently sold. Real estate agents perform a comparative market analysis for their clients to help them determine a price to list when selling a home or a price to offer when buying a home. Since no two properties are identical, agents make adjustments for the differences between the sold properties and the one that is about to be purchased or listed to determine a fair offer or sale price. Essentially, a comparative market analysis is a less-sophisticated version of a formal, professional appraisal.
The medical field also benefits from the study of comparative genomics. Vaccinology in particular has experienced useful advances in technology due to genomic approaches to problems. In an approach known as reverse vaccinology , researchers can discover candidate antigens for vaccine development by analyzing the genome of a pathogen or a family of pathogens.  Applying a comparative genomics approach by analyzing the genomes of several related pathogens can lead to the development of vaccines that are multiprotective. A team of researchers employed such an approach to create a universal vaccine for Group B Streptococcus , a group of bacteria responsible for severe neonatal infection.  Comparative genomics can also be used to generate specificity for vaccines against pathogens that are closely related to commensal microorganisms. For example, researchers used comparative genomic analysis of commensal and pathogenic strains of E. coli to identify pathogen specific genes as a basis for finding antigens that result in immune response against pathogenic strains but not commensal ones.