Prevalence and Antibiotic Susceptibility of Community-Associated Methicillin-Resistant Staphylococcus aureus in a Rural Area of India: Is MRSA Replacing Methicillin-Susceptible Staphylococcus aureus in the Community?

Table 1

Percentage susceptibilities to antimicrobial agents of Staphylococcus aureus.

	Ciprofloxacin	Erythromycin	Clindamycin	Doxycycline	Gentamicin	Rifampicin	Cotrimoxazole	Chloramphenicol
CA-SA, % (95% CI)	25.2 (18.2–33.8)	58.6 (49.4–67.3)	87.1 (79.6–92.1)	93.7 (87.3–97)	74.6 (65.9–81.7)	91.4 (82.8–95.9)	55.2 (46–64)	95.6 (89.8–98.2)
HA-SA, % (95% CI)	19.8 (12.4–29.9)	62 (50.8–72.1)	75.9 (65.2–84.2)	83.6 (72.6–90.7)	78.2 (67.6–86.1)	91.1 (80.1–96.3)	58.8 (47.6–69.1)	90.9 (82–95.6)
CA-SA versus HA-SA, P value	0.368	0.634	0.045	0.03	0.56	0.953	0.619	0.189
CA-MSSA, % (95% CI)	42.9 (28.8–58.1)	70.7 (55.1–82.6)	92.3 (78.5–97.5)	97.5 (84–99.7)	92.9 (79.9–97.7)	89.7 (72.2–96.7)	78 (62.8–88.2)	92.7 (79.5–97.6)
HA-MSSA, % (95% CI)	33.3 (17.5–54.1)	82.6 (61.6–93.4)	95.7 (74.4–99.4)	95 (71.4–99.3)	95.7 (74.5–99.4)	100 (93.5–81.5)	69.6 (48.3–84.8)	95.2 (72.5–99.3)
CA-MSSA versus HA-MSSA, P value	0.446	0.292	0.605	0.611	0.654	0.17	0.452	0.698
CA-MRSA, % (95% CI)	15.6 (9–25.6)	52 (40.7–63.1)	84.4 (74.4–91)	91.5 (82.3–96.2)	64.5 (53–74.5)	92.3 (81.1–97.1)	42.7 (31.9–54.1)	97.3 (89.6–99.3)
HA-MRSA, % (95% CI)	14 (7.1–25.8)	53.6 (40.5–66.2)	67.9 (54.5–78.8)	78.7 (64.6–88.2)	70.9 (57.5–81.4)	87.2 (72.5–94.6)	54.4 (41.3–66.9)	89.3 (78–95.1)
CA-MRSA versus HA-MRSA, P value	0.803	0.859	0.024	0.046	0.439	0.417	0.182	0.063
MSSA, % (95% CI)	39.4 (28.3–51.7)	75 (62.9–84.1)	93.5 (83.9–97.6)	96.7 (87.5–99.2)	93.8 (84.6–97.7)	93.5 (81.4–97.9)	75 (62.9–84.1)	93.5 (83.9–97.6)
MRSA, % (95% CI)	14.9 (9.8–22.1)	52.7 (44.1–61.1)	77.4 (69.5–83.8)	86.4 (78.9–91.6)	67.2 (58.6–74.7)	90.1 (81.9–94.8)	47.7 (39.3–56.3)	93.8 (88–96.9)
MSSA versus MRSA, P value	<0.001	0.003	0.006	0.032	<0.001	0.51	<0.001	0.947
CA-MSSA versus CA-MRSA, P value	0.001	0.05	0.231	0.216	0.001	0.684	<0.001	0.252
HA-MSSA versus HA-MRSA, P value	0.046	0.016	0.009	0.1	0.016	0.122	0.212	0.418

CA: community associated; HA: health-care associated; SA: Staphylococcus aureus; MSSA: methicillin-susceptible Staphylococcus aureus; MRSA: methicillin-resistant Staphylococcus aureus; CI: confidence interval.