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) do not have an acute illness ( ie >7 days) (f) are unable to come for follow-up (g) do not have community acquired pneumonia e.g. aspiration pneumonia (h)have a complicated pneumonia with effusion, pneumothorax, clinical suspicion of necrotizing pneumonia (i)require paediatric intensive care unit (PICU) admission or use of non-invasive ventilation (j)significant comorbidities that can increase the risk of having a complicated pneumonia- (k) need other antibiotics like anti-staph or macrolides (l)have an extra-pulmonary infection e.g. meningitis (m)are allergic to penicillin (n) are unable to tolerate oral antibiotics and (o)have underlying illness that can predispose to recurrent pneumonia