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67484 Ophthalmology

A person with prolonged usage of contact lenses presented with irritation of the left eye. After examination a diagnosis of keratitis was made and corneal scrapings revealed the growth of pseudomonas aeruginosa. The bacteria were observed to be multidrug resistant. Which of the following best explains the mechanism of antimicrobial resistance in these isolated pseudomonas aeruginosa strains –

AAbility to transfer resistance genes from adjacent commonsal flora
BImproper contact lens hygiene
CFrequent and injudicious use of topical antibiotics
DAbility of pseudomonas to produce biofilms
Ophthalmology
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