What are the causes of the appearance of resistant organisms?

Answer 1

The appearance of resistant organisms is primarily driven by the overuse and misuse of antibiotics and antimicrobial agents, which create selective pressure that favors the survival of resistant strains. Other contributing factors include inadequate infection control practices, poor sanitation, and the use of antibiotics in agriculture. Genetic mutations and horizontal gene transfer among microorganisms also facilitate the spread of resistance traits. Additionally, incomplete courses of treatment can allow surviving organisms to adapt and develop resistance.