“…TLR7deficient patients do not appear to be susceptible to common viral infections other than SARS-CoV-2, but further studies are required to confirm this. Indeed, TLR3 deficiency was initially reported in patients with herpes simplex encephalitis (Guo et al, 2011;Jouanguy et al, 2020;Zhang et al, 2007b), but patients with TLR3 deficiency were progressively found to be prone to other viral diseases too, including critical influenza pneumonia (Bucciol et al, 2022b;Kyung Lim et al, 2019), other types of viral encephalitis (Chen et al, 2021;Hautala et al, 2020;Kuo et al, 2022;Partanen et al, 2020), and hypoxemic COVID-19 pneumonia (Zhang et al, 2020b). Overall, our data suggest that MyD88 and IRAK-4 deficiencies underlie hypoxemic COVID-19 pneumonia.…”