Which of the following is the drug of choice for treating Chlamydia infection?

Correct option is B

Ans. (b) Sol. Erythromycin is one of the preferred antibiotics for treating Chlamydia infection, especially in pregnant women and infants with Chlamydia-related pneumonia or conjunctivitis. Chlamydia trachomatis is an intracellular bacterium, and macrolide antibiotics like Azithromycin (preferred single-dose treatment) or Doxycycline (7-day regimen) are the first-line treatments. However, Erythromycin is used as an alternative in cases where these drugs are contraindicated.
Explanation of Other Options:
· (a) Amoxicillin: Though a broad-spectrum penicillin, it is less effective against intracellular bacteria like Chlamydia and is not a first-line treatment.
· (c) Ciprofloxacin: A fluoroquinolone, primarily used for Gram-negative bacterial infections, but not recommended for Chlamydia due to lower efficacy.
· (d) Cotrimoxazole: A combination of Trimethoprim and Sulfamethoxazole, mainly used for urinary tract infections and pneumocystis pneumonia, but ineffective against Chlamydia.