Children who (a) are transferred from another hospital (b) refuse blood taking (c) have a doctor diagnosis of asthma or recurrent wheezing illness (d) have a diagnosis of bronchiolitis i.e. wheezing in a child with a CXR with no consolidation (e) not acute illness ( ie >7 days) (f) unable to come for follow-up (g) not community acquired pneumonia e.g. aspiration pneumonia (h)complicated pneumonia with effusion, pneumothorax, clinical suspicion of necrotizing pneumonia (i)PICU admission or use of Non-invasive ventilation (j)significant comorbidities that can increase the risk of having a complicated pneumonia- (k) need for use of other antibiotics like anti-staph or macrolides (l)extra-pulmonary infection e.g. meningitis (m)allergy to penicillin (n) unable to tolerate oral antibiotics (o) underlying illness that can predispose to recurrent pneumonia