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Viral and bacterial pathogens most commonly involved in infectious asthma.
| Viruses | Rhinoviral species |
| Respiratory syncytial virus | |
| Bacteria | Haemophilus influenza |
| Streptococcus pneumoniae | |
| Moraxella catarrhalis | |
| Mycoplasma pneumoniae | |
| Chlamydia pneumoniae |
