Table 3 Microbiological etiology in community-acquired infection
Microorganism | Infection without SIRS | Sepsis | Severe sepsis | Septic shock |
|---|---|---|---|---|
Gram-positive | ||||
 Streptococcus pneumoniae | 12 | 9 | 7 | 2 |
 Group A/C/G streptococci | 8 | 6 | 11 | 1 |
 Group B streptococci | 1 | 4 | 2 | 0 |
 Enterococci | 2 | 1 | 2 | 0 |
 Staphylococcus aureus | 25 | 19 | 25 | 2 |
 Coagulase negative Staphylococcus | 7 | 2 | 1 | 1 |
 Staphylococcus lugdunensis | 1 | 0 | 0 | 0 |
 Staphylococcus epidermidis | 3 | 4 | 2 | 0 |
 Staphylococcus saprophyticus | 1 | 0 | 0 | 0 |
 Non haemolytic streptococcus | 0 | 1 | 1 | 0 |
Gram-negative | ||||
 Escherichia coli | 46 | 44 | 37 | 3 |
 ESBL - Escherichia coli | 1 | 0 | 2 | 0 |
 Klebsiella spp. | 12 | 8 | 7 | 0 |
 Other Enterobacteriaceae | 9 | 2 | 8 | 1 |
 Moraxella catarrhalis | 6 | 1 | 4 | 1 |
 Pseudomonas aeruginosa | 4 | 3 | 4 | 0 |
 Haemophilus spp. | 16 | 9 | 10 | 1 |
 Campylobacter spp. | 1 | 0 |  | 0 |
 Legionella spp. | 0 | 0 | 4 | 0 |
 Unspecified gram-negative rods | 4 | 1 | 4 | 0 |
Anaerobic bacteria | ||||
 Clostridium spp. | 2 | 0 | 4 | 0 |
 Bacteroides spp. | 0 | 0 | 0 | 0 |
 Unspecified gram-positive rods | 2 | 1 | 1 | 0 |
Other | ||||
 Mycoplasma pneumoniae | 1 | 2 | 0 | 0 |
 Mycobacterium tuberculosis | 0 | 1 | 0 | 0 |
 Candida spp. | 4 | 1 | 1 | 1 |
 H1N1 | 0 | 0 | 1 | 0 |
 Herpesvirus | 1 | 0 | 0 | 0 |
 Sapovirus | 0 | 1 | 0 | 0 |
 VZV | 0 | 0 | 1 | 0 |
 Norovirus | 0 | 0 | 1 | 0 |