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Table 5 Blood culture results, by pneumonia severity

From: Epidemiology and risk factors for pneumonia severity and mortality in Bangladeshi children <5 years of age before 10-valent pneumococcal conjugate vaccine introduction

  Pneumoniaa
N = 1402
n (%)
Severe pneumoniaa
N = 1947
n (%)
Total
N = 3349
n (%)
No growth 1307 (93) 1794 (92) 3101 (93)
Contaminationb 76 (5) 110 (8) 186 (7)
Total positive blood cultures 19 (1) 43 (2) 62 (2)
S. pneumoniae 9 (47) 12 (28) 21 (34)
S. typhi 3 (16) 10 (23) 13 (21)
K. pneumoniae 2 (11) 4 (9) 6 (10)
Acinetobacter sp. 0 (0) 4 (9) 4 (6)
S. aureus 2 (11) 2 (5) 4 (6)
Enterobacter sp. 0 (0) 4 (9) 4 (6)
Non-typeable H. influenzae 1 (5) 1 (2) 2 (3)
S. paratyphi-A 1 (5) 2 (5) 3 (5)
Pseudomonas sp. 0 (0) 2 (5) 2 (3)
Salmonella sp. 1 (5) 0 (0) 1 (2)
E.coli 0 (0) 1 (2) 1 (2)
Streptococcus sp. 0 (0) 1 (2) 1 (2)
  1. Percentages may not sum to 100% due to rounding
  2. aCase definitions: 1) Pneumonia: history of coughing or difficulty breathing and age-specific tachypnea without any of the following signs, including inability to drink or breastfeed, vomiting with a final discharge diagnosis code for pneumonia or severe pneumonia, convulsions, prostration/lethargy, chest indrawing, or stridor in a calm child); 2) Severe pneumonia: history of coughing or difficulty breathing and ≥1 of the aforementioned signs. Because the sign, “vomiting everything” was not specifically captured in the abstraction form, we included children with a history of vomiting who also had a final hospitalization diagnosis of pneumonia or severe pneumonia to improve specificity for this sign
  3. bThe following isolates were considered as contaminants: Streptococci viridans, Micrococcus sp., Bacillus sp., diphtheroids, coagulase-negative staphylococci, and Candida sp.30