In 2010, a 19-year-old migrant farmworker from Mexico arrived at a sugarcane plantation in Louisiana unknowingly carrying a deadly virus. His symptoms were mild at first: fatigue, shoulder pain, and numbness in one of his hands. As his condition worsened, he was admitted to a hospital in New Orleans.
There, he spiked a fever. His lungs filled with fluid. His pupils became fixed and dilated, and he was soon unresponsive. Doctors suspected swelling in his brain, and ran a test that showed antibodies to the rabies virus in his blood. Rabies is almost always fatal in humans if left untreated, and in this case, it was already too late; the
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