After excluding 7 patients (5 incomplete data and 2 for presence of nosocomial pneumonia), data of 50 patients was available for analysis ( Table 1 ). The patients age ranged from 7 months to 82 years (median 20.3 years), with 90% patients (45/50) < 50 years. Excluding 6 * Not assessed in children < 3 years (n = 44) ** A patient may have more than one comorbidity or complications ¶ Includes asthma (n-= 9), Chronic obstructive airway disease (n = 1) and bronchiectasis (n = 1) Ψ Includes chronic myeloid leukemia (n = 1), acute myeloid leukemia (n = 1), meningioma of brain (n = 1) ¥ Includes autoimmune haemolytic anaemia (n = 1), idiopathic thrombocytopenia purpura (n = 1) £Includes cardiovascular disease (n = 2), immunosuppressives (n = 2), hypothyroidism (n = 1), stroke (n = 1) ® Includes liver impairment (n = 12), renal impairment (n = 4) septic shock (n = 2) and ARDS (n = 2). Ω Includes bacterial (n = 14), viral (n = 3). The sites for isolation of 9 non-Mycoplasma bacteria: (blood = 2, sputum = 3, nasopharyngeal aspirate = 3, bronchoalveolar lavage = 2) © Established values in our laboratory, Adults: leukocytes 4-11 × 10 9 /L; neutrophils 2-7.5 × 10 9 /L; lymphocyte 1.5-4 × 10 9 /L; Paediatrics: age-dependent ALF: abnormal liver function (n = 41) (raised alanine aminotransferase/ aspartate aminotransferase or both) ARF: abnormal renal function (n = 42) (raised creatinine) pregnancies, 24 patients (48%) had at least one preexisting comorbidity; lung disease being the commonest. The mean duration of symptoms before hospitalization was 4.4 ± 3.08 days (range 1-14 days). Cough (100%) and fever (98%) were the most common symptoms on admission. Twelve patients (24%) had oxygen saturation < 95% at presentation. Pneumonia was diagnosed in 25 patients (50%) based on clinical and radiological findings.