| Category | Specific examples | Diagnostic tests |
| Childhood infections | Pertussis; measles | History of infection |
| Bacterial infections | Infections due to Staphylococcus aureus, Pseudomonas aeruginosa | History of infection; sputum culture |
| Viral infections | Infections due to adenovirus (particularly types 7 and 21), influenza, herpes simplex | History/serologic evidence of infection |
| Other infections | Fungal (histoplasmosis); Mycobacterium tuberculosis, nontuberculous mycobacteria; possibly mycoplasma | Fungal culture; AFB smear and mycobacterial culture |
