* Adult participants ≥ 18 years old at the time of signing the informed consent form.
* Patients hospitalised with viral lung infection.
* Hypoxaemia requiring treatment with supplemental O2.
Hypoxaemia is defined as:
SpO2 ≤ 90% OR
SpO2 ≤ 92% AND one or both of the following:
Radiographic infiltrates by CXR/CT compatible with viral lung infection per investigator judgement.
Use of accessory muscles of respiration or RR (respiratory rate) \> 22.
\- Patient remains hypoxaemic at randomisation requiring treatment with supplemental oxygen.
Exclusion Criteria:
* Known fungal or parasitic lung infection, aspiration lung infection, lung abscess, or evidence of septic shock. Bacterial co-infection is allowed, unless, in the opinion of the investigator, bacterial infection defines the severity of the participant's condition.
* Hypoxaemia caused primarily by extrapulmonary insult or by lung injury of non-infective aetiology.
TMMC- TILIA A Phase III, Multicentre, Randomized, Double-blind, parallel-group, placebo-controlled study to evaluate the efficacy and safety of Tozorakimab in patients hospitalised for viral lung infection requiring supplemental oxygen