The teenage environmentalist said that the world seems to have gone past “some kind of social tipping point” in the global efforts to control the spread of the virus.
She told a Swedish radio station in a programme shared with the BBC: “People are starting to realise that we cannot keep looking away from these things, we cannot keep sweeping these injustices under the carpet.”
Ms Thunberg, who founded the Schools Strike for Climate movement, believes the pandemic has demonstrated how authorities should act on climate change.
She said: “It shows that in a crisis, you act, and you act with necessary force… Suddenly people in power are saying they will do whatever it takes since you cannot put a price on human life.”
Ms Thunberg, 17, said she hoped that coronavirus would also encourage people to think more about the deaths caused by climate change.
She also criticised businesses for their use of terms like “sustainable”, “net-zero” and “environmentally friendly”, saying they have become meaningless.
And the climate activist hit out at what she called attempts by governments around the world to mask carbon footprints by being selective about the processes included in the total figure.
Some countries leave out emissions from ships and aircraft, as well as the emissions from goods produced in factories abroad.
It is “extremely likely” Ms Thunberg has had coronavirus, she said in late March.