Nature Reviews Immunology (2020) https://doi.org/10.1038/s41577-020-0343-0 Published online 21 May 2020

In the originally published article, the following affiliation for Peter Carmeliet was missing: State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China. Also, the sentence “Moreover, ECs seem to be gatekeepers of this immune response, as inhibition of the sphingosine 1 phosphate receptor 1 (S1PR1) in pulmonary ECs dampens the cytokine storm in influenza infection” has been corrected to “Moreover, ECs seem to be gatekeepers of this immune response, as modulation of the sphingosine 1 phosphate receptor 1 (S1PR1) in pulmonary ECs dampens the cytokine storm in influenza infection”.