Table 1 Overview of theS. aureusstrains used in the current study. This includes the origin of the used strains, their resistance to different antibiotics and sensitivity to the isolated phage (PSK1)

SK1

Wound isolate from out-patient in private laboratory, Cairo, Egypt

Oxacillin ^R, cefoxitin^R, vancomycin^S, linezolid ^S, erythromycin^R, gentamicin ^R, amoxycillin-clavulanic ^R, fusidic acid ^R, tetracycline^S, tigecycline ^S, trimethoprim-sulfamethoxazole ^R

+

1

SK2

Wound isolate from out-patient in private laboratory, Cairo, Egypt

Oxacillin ^S, cefoxitin^R, vancomycin ^S, linezolid ^S, gentamicin ^S, amoxycillin-clavulanic ^S, fusidic acid ^R, tetracycline ^S, tigecycline ^S, trimethoprim-sulfamethoxazole ^S, erythromycin^R

-

SK3

Wound isolate from out-patient in private laboratory, Cairo, Egypt

Oxacillin ^S, cefoxitin^R, vancomycin ^S, linezolid ^S, gentamicin ^S, amoxycillin-clavulanic ^S, fusidic acid ^R, tetracycline ^S, tigecycline ^S, trimethoprim-sulfamethoxazole ^S, erythromycin^R

-

SK4

Wound isolate from out-patient in private laboratory, Cairo, Egypt

Oxacillin ^S, cefoxitin^R, vancomycin ^S, linezolid ^S, gentamicin ^S, amoxycillin-clavulanic ^S, fusidic acid ^R, tetracycline ^S, tigecycline ^S, trimethoprim-sulfamethoxazole ^R, erythromycin^R

-

SK10

Methicillin-resistant strain recovered from pus (unpublished)

Methicillin ^R, Vancomycin^S

-

SK15

Methicillin-resistant strain recovered from blood. (unpublished)

Methicillin ^R, vancomycin^S

+

0.41

SK12

Vancomycin-resistant strain recovered from patient’s wound, Al-Azhar University, Cairo, Egypt. (unpublished)

Methicillin ^R, vancomycin^R

+

0.92

SK30

Vancomycin-resistant strain recovered from patient’s wound, Al-Azhar University, Cairo, Egypt. (unpublished)

Methicillin ^R, vancomycin^R

+

0.83

S. aureus ATCC43300

Reference strain (https://www.atcc.org/products/43300)

Methicillin ^R

-

S. aureus ATCC25923

Reference strain

(https://www.atcc.org/products/25923)

Methicillin-sensitive reference strain for susceptibility testing (CLSI, M2-A9)

-