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Table 5 Incidence of select pathogens associated with SARI case status among children < 5, Kibera, Kenya

From: Severe acute respiratory infection in children in a densely populated urban slum in Kenya, 2007–2011

Pathogen % SARI with pathogen detected (from Table3) Pathogen specific-Number of SARI casesa Proportion of all clinic visits for SARI that went to study clinic Adjusted No. of Pathogen specific-SARI casesb PAFc Final Adjusted Number of Casesd Rate/100PYOe(95% CI)
Influenza A 11.2% 290 0.82 354 0.64 227 1.0 (0.4-1.7)
Influenza A and B combined 13.7% 355 0.82 433 0.64 277 1.3 (0.6-2.0)
Respiratory syncytial virus 20.7% 537 0.82 654 0.90 589 2.8 (2.4-3.2)
S. pneumoniae 1% 23 0.82 28 1.00 28 0.1 (0.1-0.2)
S. aureus 1.7% 41 0.82 51 1.00 51 0.2 (0.2-0.3)
Non-typhi Salmonella 1.6% 39 0.82 47 1.00 47 0.2 (0.2-0.3)
Salmonella Typhi 0.6% 18 0.82 22 1.00 22 0.1 (0.1-0.2)
Influenza B 2.6% 67 0.82 82 0.57 47 0.3 (0.0-0.5)
Adenovirus 29.5% 765 0.82 932 0.36 336 1.5 (0.1-2.9)
Parainfluenza virus 1 3.4% 88 0.82 107 0.77 83 0.4 (0.1-0.7)
Parainfluenza virus 3 9.4% 244 0.82 297 0.55 163 0.8 (0.2-1.4)
Any parainfluenza 15.0% 389 0.82 474 0.46 218 1.1 (0.2-1.9)
Human metapneumovirus 11.9% 308 0.82 376 0.53 199 0.9 (0.3-1.6)
  1. aPathogen-specific number of cases = % SARI (with swabs collected) with specific pathogen detected multiplied by 2,592—i.e. the number of overall SARI cases (with and without swabs collected).
  2. bAdjusted number of pathogen-specific SARI cases = Pathogen specific number of SARI cases/0.82 (Proportion of all clinic visits for SARI that were to study clinic).
  3. cPAF = Pathogen Attributable Fraction (see methods).
  4. dFinal adjusted number of cases = Adjusted No. of pathogen specific-SARI cases multiplied by PAF.
  5. eRates calculated per 100 person-years of observation.
  6. March 1, 2007-February 28, 2011.