First and second spa gene types with 50 (39.06%) and
37 (28.9%) cases respectively, were the most common
types, but only one S. aureus isolate belonged to the
fifth to seventh spa types. The frequencies of the first to
fourth spa types were as follows; type 1: 39.06%, 2: 28.9%,
3: 16.4%, and 4: 13.3%. Table 1 shows the distribution of
seven spa types in MRSA and MSSA S. aureus samples,
showing a statistically significant difference (P < 0.001).
While type 1 (45.8%) was the most common among the
MSSA isolates, type 2 (53.3%) was the most prevalent
among MRSA isolates. On the other hand, spa type 3
was significantly more prevalent in MRSA than MSSA
(Table 1). Table 2 shows the distribution of the seven spa
types among S. aureus samples isolated from patients
and healthy carriers. spa types 1 and 2 and spa types 1,
3 were predominant in S. aureus samples isolated from
patients and healthy carrier, respectively. Difference
in distribution of the spa types in the two groups was
statistically significant (P = 0.003). Table 3 shows the
frequency of all spa types in S. aureus samples isolated
from the patients. While types 1, 2 and 4 were found in
all the clinical samples, type 3 was only seen in the isolates
from skin and throat culture.