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| ==Clinical== | | ==Clinical== |
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| [[Image:Dictyocaulus viviparus.jpg|right|thumb|100px|<small><center>Dictyocaulus viviparus (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]] | | [[Image:Dictyocaulus viviparus.jpg|right|thumb|100px|<small><center>Dictyocaulus viviparus (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]] |
| [[Image:Parasitic bronchitis.jpg|right|thumb|100px|<small><center>Parasitic bronchitis (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]] | | [[Image:Parasitic bronchitis.jpg|right|thumb|100px|<small><center>Parasitic bronchitis (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]] |
− | *Found in [[Tracheitis#Infectious causes of tracheitis|trachea]] and [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|large bronchi]] | + | *Found in [[Tracheitis#Infectious causes of tracheitis|trachea]] and [[Bronchitis#Infectious causes of bronchitis or bronchiolitis|large bronchi]] |
| *Causes parasitic bronchitis, synonyms: bovine dictyocauliosis, husk, hoose | | *Causes parasitic bronchitis, synonyms: bovine dictyocauliosis, husk, hoose |
| *Primary infection: | | *Primary infection: |
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| ***Larvae migrate to lungs, no clinical signs | | ***Larvae migrate to lungs, no clinical signs |
| **Prepatent phase (weeks 1-3) | | **Prepatent phase (weeks 1-3) |
− | ***Development and migration of larvae -> [[Bronchi and Bronchioles Inflammatory - Pathology#Bronchiolitis|bronchiolitis]] -> eosinophilic exudate -> air passage blocked -> alveolar collapse (distal to blockage) -> clinical signs (tachypnoea, coughing) | + | ***Development and migration of larvae -> [[Bronchitis#Bronchiolitis|bronchiolitis]] -> eosinophilic exudate -> air passage blocked -> alveolar collapse (distal to blockage) -> clinical signs (tachypnoea, coughing) |
| **Patent phase (weeks 4-8) | | **Patent phase (weeks 4-8) |
| ***Egg-producing mature worms | | ***Egg-producing mature worms |
− | ***[[Bronchi and Bronchioles Inflammatory - Pathology#Bronchitis|Bronchitis]] - due to mature worms | + | ***[[Bronchitis|Bronchitis]] - due to mature worms |
| ***[[Lungs Inflammatory - Pathology#Verminous pneumonia|Parasitic pneumonia]] - due to aspiration of eggs and larvae -> cellular infiltration of [[Neutrophils|neutrophils]], macrophages, giant cells | | ***[[Lungs Inflammatory - Pathology#Verminous pneumonia|Parasitic pneumonia]] - due to aspiration of eggs and larvae -> cellular infiltration of [[Neutrophils|neutrophils]], macrophages, giant cells |
| **Postpatent phase (weeks 8-12) | | **Postpatent phase (weeks 8-12) |