A local animal rescue in Northern California warns of a surge in sea lions with a potentially fatal bacterial infection, leptospirosis, and advises dog owners to keep pets away.
The Marine Mammal Center and California Academy of Sciences are reporting cause of death for one.
Many of the dead seals that washed ashore in northern New England in the past few weeks tested positive for either avian influenza or phocine distemper virus, but it is still too soon to say if those viruses are the primary causes of the unusual die-off.
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