Serotype Distribution and Antibiotic Susceptibility of Streptococcus pneumoniae Isolates in Tehran, Iran: A Surveillance Study

Figures & data

Figure 1 Distribution of S. pneumoniae serotypes isolated from IPD & non-IPD.

Abbreviations: IPD, invasive pneumococcal disease; Non-IPD, non-invasive pneumococcal disease; NVT, non-vaccine type.

Table 1 Minimum Inhibitory Concentrations of S. pneumoniae Isolates

		Penicillin		Ceftriaxone
		I%	R%	I%	R%
MIC break point (µg/mL)	Meningitis	—	≥ 0.12	1	≥ 2
	Non-meningitis	4	≥ 8	2	≥ 4
Period I	Meningitis (n=4)	25 (1)	25 (1)	0 (0)	50 (2)
	Non-meningitis (n=36)	2.7 (1)	27.7 (10)	2.7 (1)	5.5 (4)
Period II	Meningitis (n=2)	0 (0)	50 (1)	0 (0)	0 (0)
	Non-meningitis (n=38)	13.1 (5)	26.3 (10)	10.5 (4)	18.4 (7)

Abbreviations: I, intermediate; R, resistant.

Figure 2 Antibiotic susceptibility of S. pneumoniae isolates.

Figure 3 Serotype distribution of S. pneumoniae isolates according to penicillin susceptibility.

Figure 4 Serotype distribution of MDR S. pneumoniae isolates.

Abbreviations: IPD, invasive pneumococcal disease; Non-IPD, non-invasive pneumococcal disease.