At the end of his evidence, he was thanked by the inquiry’s chairwoman Baroness Hallett who said “it was obvious how distressing it was for you and reliving such an ordeal is never easy.”
England's chief medical officer Prof Sir Chris Whitty, who was next to speak at the inquiry, said he agreed with the evidence "very powerfully laid out" by Prof Fong.
He said that NHS hospitals in England entered the pandemic in early 2020 with a “very low” level of beds in intensive care compared to similar high-income countries.
“That's a political choice. It's a system configuration choice, but it is a choice,” he told the inquiry.
“Therefore, you have less in reserve when a major emergency happens, even if it's short of something of the scale of covid.”
Sir Chris suggested that countries like the UK had no alternative but to impose lockdown and other social restrictions to avoid a “catastrophic” amount of pressure on the healthcare system.
He accepted that “in many individual cases” doctors and nurses found the situation “incredibly difficult” but said without lockdown restrictions “the expectation is it would have got worse. Not a trivial amount worse, but really quite substantially worse”.
Asked about PPE for healthcare workers, Sir Chris said that messaging around which masks NHS staff should wear was "confused" at the start of the pandemic, leading to an "erosion of trust".
He suggested that more research was needed to see if a higher grade FFP3 mask offered more protection than a basic surgical mask in real-life hospital use, rather than in a laboratory.
"The question is what happens when people are using it day-in and day-out in operational circumstances, and if it doesn't hold up in that situation, it's not doing a heck of a lot of good," he said.
In a future pandemic, he said he would give healthcare workers the choice of which mask to wear "within reason".