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What will be the fatality ratio in the US of COVID-19 patients who need and receive invasive ventilation in 2020?

Complications of severe COVID-19 include pneumonia and hypoxemic respiratory failure among other things. As such, mechanical ventilators have been crucial for patients with severe COVID-19. As of April, 2020 there is such a high demand that methods are being developed to treat multiple patients with a single ventilator.

Several small studies have looked at the mortality rate of patients requiring ventilation. This question asks:

What will be the fatality ratio in the US of COVID-19 patients who need and receive invasive ventilation in 2020?

Resolution will be determined by credible scientific evidence published before 2021-06-01 as determined by Metaculus. In case admins find multiple estimates deemed credible, the question resolves as the median of these estimates. For the purpose of this question, fatility ratio is defined as:

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