Table 2. Nasopharyngeal carriage prevalence of Streptococcus pneumoniae, Staphylococcus aureus, methicillin-resistant Staphylococcus aureus (MRSA), and Haemophilus influenzae in elderly individuals > 60 years of age considering the subset of participants seen in both visit 1 and the follow-up visit (visit 2; n = 584).

Carriage	n = 776			n = 584a
	Visit 1			Visit 1			Visit 2
	n	%	95% CI	n	%	95% CI	n	%	95% IC
S. aureus	123	15.9	13.5–18.6	91	15.6	12.9–18.8	105	18.0	15.1–21.3
MRSA	18	2.3	1.5–3.6	12	2.1	1.2–3.6	18	3.1	2.0–4.8
S. pneumoniae	17	2.2	1.4–3.5	9	1.5	0.8–2.9	15	2.6	1.6–4.2
H. influenzae	19b	2.5	1.6–3.8	14c	2.4	1.4–4.0	10d	1.7	0.9–3.1

^a Subset composed of the same individuals for visit 1 and follow-up visit (visit 2)

^b,c,d All non-typeable isolates