CBC News – Almost half of Canada’s COVID-19 cases are caused by spread in the community from an unknown source, and experts say that signals there could be a silent epidemic happening across the country.

Of the 1,044 cases that the Public Health Agency of Canada has provided epidemiological data on as of Monday, 48 per cent are a result of infection from community transmission, while 42 per cent are tied to travel and seven per cent are linked to close contact with a traveller who tested positive.

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