Hawaii is the only US state that hasn't reported H5N1 avian flu in birds or animals.
The teen was previously healthy and didn't have any links to farms or poultry.
The patients are from 4 different provinces, and all but one is a child.
The 2023 outbreak showed H5N1 spread efficiently among marine mammals.
The presumed positive infection comes amid a rise in poultry outbreaks in BC and US western states, likely triggered by wild bird migration.
The CDC now recommends testing and prophylactic Tamiflu use in asymptomatic workers exposed to sick animals.
Since a spillover in October 2023 the novel reassortment has replaced the older clade in Cambodia's poultry.
The new UK mpox patient is another member of the index case's household.
In related developments, the USDA reported more dairy cow and poultry outbreaks, as Los Angeles Country announced its first H5 wastewater detection.
In other developments, California reported a few more poultry culler illnesses, along with more outbreaks in both dairy cows and commercial poultry.
