explain the effects of pneumococcal pneumonia on the
respiratory tract. You should mention specific cell types...
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explain the effects of pneumococcal pneumonia on therespiratory tract. You should mention specific cell types andspecific respiratory structures
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Pneumococcal pneumonia More than 90 of all lobar pneumonias are caused by Streptococcus pneumoniae a lancetshaped diplococcus Out of various types type 3 S pneumoniae causes particularly virulent form of lobar pneumonia Pneumococcal pneumonia in majority of cases is communityacquired infection MORPHOLOGIC FEATURES Laennecs original descrip tion divides lobar pneumonia into 4 sequential pathologic phases stage of congestion initial phase red hepatisation early consolidation grey hepatisation late consolidation and resolution However these classic stages seen in untreated cases are found much less often nowadays due to early institution of antibiotic therapy and improved medical care In lobar pneumonia as the name suggests part of a lobe a whole lobe or two lobes are involved sometimes bilaterally The lower lobes are affected most commonly The sequence of
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