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What is Moraxella catarrhalis is resistant to which antibiotic? and explain in detail?
Ans. is 'a' i.e., Amoxicillin Treatment of M. caterrahlis infection: M. catarrhalisrapidly acquired -lactamases during the 1970s and 1980s; antimicrobial susceptibility patterns have remained relatively stable since that time, with >90% of strains now producing -lactamase and thus resistant to amoxicillin. Most strains of M. catarrhalisare susceptible to amoxicillin and clavulanic acid combination, extended-spectrum cephalosporins, newer macrolides (azithromycin, clarithromycin), trimethoprim- sulfamethoxazole, and fluoroquinolones.