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After reading the abstract, this title seems to me like flame/click-bait.

This test has been done in mice only (since no other animal was mentioned in the abstract).

If one follows the scientific method, this means whatever conclusion the authors make can only be extended to mice. Extrapolation to “mammals” is not present in the abstract implicitly or explicitly.

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> Two experiments with different challenge-to-contact ratios were conducted to assess transmission dynamics and mutation development. In experiment 1, a 4:1 challenge-to-contact ratio resulted in 100% transmission among direct-contact mice, with all mice succumbing to the infection. In experiment 2, a 1:1 ratio yielded 50% transmission, with all challenged mice also succumbing.

It’s not clear from the abstract that any human-made changes were made to the H5N1 either.

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