By multivariate regression analysis (adjusted for gender, age, and season), MP (OR: 70.068, 95%CI: 32.665–150.298, P < 0.01), HMPV (OR: 6.493, 95%CI: 4.802–8.780, P < 0.01), Bocavirus (OR: 3.300, 95%CI: 2.186–4.980, P < 0.01), HRSV (OR: 2.649, 95%CI: 2.089–3.358, P < 0.01), HPIV (OR: 2.193, 95%CI: 1.740–2.764, P < 0.01), and InfA (OR: 1.432,95%CI: 1.078–1.903, P < 0.013) were more likely to develop pneumonia than the other pathogens. Here, IFNA17 is linked to pneumonia.