Ken Paxton, the Texas attorney general and Republican Senate candidate, has alleged a sprawling profit-driven conspiracy. Pediatricians say the accusations are an attempt at intimidation.

© Kaylee Greenlee for The New York Times

Ken Paxton, the Texas attorney general and Republican Senate candidate, has alleged a sprawling profit-driven conspiracy. Pediatricians say the accusations are an attempt at intimidation.

© Kaylee Greenlee for The New York Times

In a small Idaho town, a young mother is accused of killing her young twins. She blames the childhood vaccines they received.