A study has found that International travel has had the biggest impact on COVID-19 related deaths for the pandemics first wave.
The study looked at countries including Spain, France, the UK, America, Italy and Brazil.
It found an increase of one million international arrivals being associated with a 3.4% rise in the mean daily increase in COVID-19 deaths.
Researchers said this data will be used to inform future policies in preventing the spread of COVID-19.