Corticosteroid suppression of antiviral immunity increases bacterial loads and mucus production in COPD exacerbations. - Singanayagam A; Glanville N; Girkin JL; Ching YM; Marcellini A; Porter JD; Toussaint M; Walton RP; Finney LJ; Aniscenko J; Zhu J; Trujillo-Torralbo MB; et al. (Nature communications, 2018)