IFNA17 and susceptibility to pneumonia measurement: Hypoxaemic pneumonia Respiratory samples = 70: SP = 63.9% (44); SA = 17.4% (12); Hib = 5.7% (4); HMPV = 14.5% (10); AdV = 5.7% (4); RSV = 25.7% (18); PIV1 = 4.3% (3); PIV2 = 1.4% (1); PIV3 = 1.4% (1); PIV4 = 2.9% (2); INFA = 5.7% (4); Blood samples: SP = 14.3% (10); SA = 4.3% (3); Hib = 4.3% (3)