Region Type of virus Transmission Route Incubation Period Source of Infection Sign Symptom Complication Virulence Factor Dif. Diagnosis Epidemiology Prophylaxis
Bacterial infections Diplococcus pneumoniae ( Streptococcus pneumoniae Aspiration of pneumococci contained in upper airway secretions into the lower respiratory tract . When the normal defences are compromised by viral infection , anaesthesia, chilling or other factors. Variable Na Patients present with productive purulent cough , fever and chest pain , with dullness on percussion due consolidation and crackles on auscultation. Patients present with productive purulent cough , fever and chest pain , with dullness on percussion due consolidation and crackles on auscultation Capsules , IgA1 Protease , Pneumolysin , Autolysin Current vaccine contains 23 different capsular polysaccharides which is stated to give 80 - 90 percent protection