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The same goes for pigs — a single case was found among five backyard pigs in October in a non-commercial operation where swine mixed with poultry and other livestock.

Human respiratory physiology is more like that of swines than felines.

When patients are positive on a general flu test — a common diagnostic that indicates human, swine, or bird flu — clinics should probe more deeply, Nuzzo said.

“African swine fever is spreading all over Europe,” said Michal Haring, a biologist from Slovakia, “and the wolf is a very good ‘doctor’ for this, suppressing the disease.

Oregon state and federal officials confirmed Wednesday that H5N1 bird flu was found in a pig living Crook County — the first such swine infection reported in the current outbreak.