Viruses have deoxyribonucleic acid (DNA) or ribonucleic acid (RNA) as their genome, which already makes them different from any other pathogenic agent or microorganism. Knowing all or part of its genome generally makes it possible to establish faster, more effective, simpler and lower-cost diagnostic methods. Virology is a discipline in constant change or at least surprises, represented by the appearance of new strains or variants that can wreak some havoc on animal species, including us. Studying animal viruses is studying viruses that emerge in humans, since viruses are viruses and knowing part of their genome today allows us to establish the Polymerase Chain Reaction (PCR) protocols for their detection, as two Nobel Prize winners would say.