Undiagnosed — Canada
Cases under investigation / 48
Deaths / 6*
Illness onset date range in years / 2013-2020**
Gender / 50% female, 50% male
Age range in years / 18-85
*In some cases, additional information is needed to determine if the cause of death was a result of this syndrome.
**Symptoms started in 2018, 2019 or 2020 for most cases. Only one case identified retrospectively in 2020 was found to experience symptoms in 2013.
Timeline
– Between January 2019 and July 2019, New Brunswick physicians
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