§ 300d–31.
(4)
Trauma
The term “trauma” means an injury resulting from exposure to—
(A)
a mechanical force; or
(B)
another extrinsic agent, including an extrinsic agent that is thermal, electrical, chemical, or radioactive.
([July 1, 1944, ch. 373], title XII, § 1231, as added [Pub. L. 101–590, § 3], Nov. 16, 1990, [104 Stat. 2926]; amended [Pub. L. 102–321, title VI, § 602(2)], July 10, 1992, [106 Stat. 436]; [Pub. L. 103–183, title VI, § 601(f)(4)], Dec. 14, 1993, [107 Stat. 2239]; [Pub. L. 113–152, § 2(a)], Aug. 8, 2014, [128 Stat. 1825].)