Sites potentially affected:
(1) kidney
(2) ureter
(3) urinary bladder
(4) tissue surrounding the retroperitoneal or perinephric spaces
Symptoms in patients > 12 months of age:
(1) fever (> 38°C)
(2) localized pain at affected site
(3) tenderness at affected site
Symptoms in patients <= 12 months of age:
(1) fever (> 38°C)
(2) hypothermia (< 37°C)
(3) apnea
(4) bradycardia
(5) lethargy
(6) vomiting
Criteria 1:
(1) organism isolated from culture of fluid (other than urine) or tissue from affected site
Criteria 2:
(1) abscess or other evidence of infection seen on direct examination, during surgery or by histopathologic examination
Criteria 3 - all of the following:
(1) age > 12 months
(2) at least 2 symptom for age > 12 months
(3) at least one of the following:
(3a) purulent drainage from affected site
(3b) organism isolated from blood culture
(3c) radiographic evidence of infection
(3d) physician's diagnosis
(3e) physician institutes appropriate antimicrobial therapy
Criteria 4 - all of the following:
(1) age <= 12 months
(2) at least 1 symptom for age <= 12 months
(3) at least one of the following:
(3a) purulent drainage from affected site
(3b) organism isolated from blood culture
(3c) radiographic evidence of infection
(3d) physician's diagnosis
(3e) physician institutes appropriate antimicrobial therapy
