Changes

Microscopic pathology may include acute to chronic suppurative bronchopneimonia with heterophilic infiltration. There will also be generalised obliteration of the normal architecture together with fibrinous exudate.

Microscopic pathology may include acute to chronic suppurative bronchopneimonia with heterophilic infiltration. There will also be generalised obliteration of the normal architecture together with fibrinous exudate.

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'''''Streptococcus'' Pathology''': necropsy will show fibrinopurulent bronchopneumonia, with or without fibrinous pleuritis and pericarditis. Lungs will often contain a sanguinous fluid.

'''''Streptococcus'' Pathology''': necropsy will show fibrinopurulent bronchopneumonia, with or without fibrinous pleuritis and pericarditis. Lungs will often contain a sanguinous fluid. Histologically, an acute fibrinosuppurative bronchopneumonia is present with thrombosis of pulmonary vessels. Infiltrating cells may be elongate and form palisading patterns in affected airways.

===Adenovirus===

===Adenovirus===