Britain's BBC commissioned a global poll to find out the profound and diverse effect that the pandemic had on mental health.
The World Health organisation says it confirmed their own findings, with a third of people polled in 30 countries reported bereavement, illness or financial problems.
But a third of those polled said they experienced an improvement in their sense of wellbeing and in Vietnam, a majority of people said they feel better now than before the pandemic.
Young people aged 18-24 were much more likely to say the pandemic had a major effect on their mental health - either positive or negative.
Older people were more likely to say it had no effect at all.
