BALTIMORE, M.D. — The COVID-19 death toll in the United States has surpassed 350,000 as experts anticipate another surge in coronavirus cases and deaths stemming from holiday gatherings over Christmas and New Year’s.
Canada will require passengers seeking to board international flights into the country to show their airline proof of a negative coronavirus test, in addition to entering an already existing, mandatory 14-day quarantine on arrival.
The new rule, which the government announced on Thursday, will take effect on Jan. 7 and will require proof of a negative PCR test taken in the previous 72 hours. PCR tests must be sent to a lab and can take several days to process, unlike the rapid antigen test, which gives a result in about 30 minutes.
Nearly a year into the coronavirus pandemic, the perplexing problems of Covid-19 long-haulers seem no nearer resolution — or even explanation — than when they first puzzled doctors and patients in the spring.
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