I will endeavour to answer that quickly.
First of all, I would remind you that, when the variants first emerged in the United Kingdom, we were among the first countries in the world to take very immediate and strong action to ban all flights from the United Kingdom. Over the ensuing days, we found that the variants had unfortunately spread into other countries, so we imposed an additional layer of security. We required that all people flying into Canada from any place, whether for essential or non-essential travel, must first obtain a negative COVID test before they came to the country.
We've also implemented requirements that they would also then submit to an additional test upon their arrival. As the variants and the concern that Canadians had about the emergence of these variants began to grow, we needed to add additional layers of protection in order to protect Canadians and to stop the spread of these variants. The measures that have been put in place were determined based on the advice that we had received from our public health officials that this was the best way to provide assurance of Canadians' health and safety for arriving non-essential travellers. That's why we've implemented those measures.