'It’s pretty clear that point of entry screening is not very effective at all. Often people can test positive days and weeks later.' cdnpoli covid
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“But it’s pretty clear that point of entry screening is not very effective at all. Often people can test positive days and weeks later.” “But let’s not pretend that requiring travellers from China to have a negative PCR test before coming to Canada will have any impact on the Canadian experience with COVID-19,” he said. “It won’t.”
Isolating or quarantining travellers could help reduce the likelihood that chains of transmission get established after travel, she said.Governments and scientists have to face the possibility that there could be “a more severe, more immune invasive, more transmissible or more dangerous variant of this virus” and should draw up plans on next steps, she said.Article content
Canada hasn’t been able to prevent variants as seen with Alpha, which emerged in the United Kingdom, Delta that was first discovered in India and Omicron, which arose in southern Africa, he said.Article content
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