Changes

**Virulent strains possess capsules which are antiphagocytic and immunogenic

**Virulent strains possess capsules which are antiphagocytic and immunogenic

**Fimbriae allow the bacteria to attach to cells of the respiratory tract

**Fimbriae allow the bacteria to attach to cells of the respiratory tract

**Damaged neutrophils in the lungs produce lytic enzymes

**Damaged [[Neutrophils - WikiBlood|neutrophils]] in the lungs produce lytic enzymes

**The sustained inflammatory response causes tissue necrosis

**The sustained inflammatory response causes tissue necrosis

**Lungs consolidated and necrotic with fibrinous pleuisy at post mortem

**Lungs consolidated and necrotic with fibrinous pleuisy at post mortem