Idaho mom charged with murder says vaccine killed her twins
An Idaho mother charged with first-degree murder in the deaths of her 18-month-old twins says a vaccine reaction killed them, but doctors reviewing the case say that is not medically possible. Prosecutors allege suffocation; a judge revoked her $2 million bond this week over concerns for her newborn.
Key Takeaways
- Andrea Shaw faces two first-degree murder charges in the May 1, 2025, deaths of twins Dallas and Tyson in Payette, Idaho.
- Shaw and her attorney argue the children died from a vaccine reaction eight days after shots; medical experts say that is not possible.
- Prosecutors say the cause of death was suffocation and that investigators ruled out vaccines.
- A judge revoked Shaw's $2 million bond, citing a threat to her newborn baby.
What happened to Andrea Shaw's twins?
Andrea Shaw, 23, was indicted last month on two counts of first-degree murder in the deaths of her fraternal twins, Dallas and Tyson. The 18-month-olds were found dead in a shared bed in Payette, Idaho, on May 1, 2025, according to The Guardian and court reporting.
Prosecutors say the children died by suffocation—the only reasonable explanation, they argue, for both dying at the same time in the same bed. The case has drawn attention across true crime and unsolved mysteries coverage as Shaw's defense points to vaccines instead of homicide.
Why do doctors say a vaccine did not kill the twins?
On April 23, 2025, the twins each received DTaP, hepatitis A, and influenza vaccines. Shaw later said they developed severe symptoms the next day, including blue lips and lethargy. Partial emergency room records reviewed for The Guardian described milder findings: one twin had a temperature of 99 and decreased activity; the other was "very active." Both had good eye contact and were taking fluids.
Three doctors who reviewed case details for The Guardian said a deadly vaccine reaction would appear within minutes or hours—not eight days later. Dr. Jake Scott of Stanford said the non-live vaccines' only established fatal risk is a severe allergic reaction, which "absolutely never" kills someone eight days later. Dr. Amesh Adalja of Johns Hopkins said there is "no biological plausibility to a vaccine suffocating somebody."
Shaw told Children's Health Defense that on April 30 the twins had improved and were active and eating well. Scott said no vaccine injury improves and then kills a child overnight—let alone two children the same night. Prosecutors also said three doctors they consulted ruled out vaccines, excessive heat, carbon monoxide, and other poisoning.
What is the defense arguing—and why was bond revoked?
Defense attorney Joseph Filicetti says vaccines played a role and that medical experts will call the deaths a classic vaccine reaction. He argues he need not prove that beyond a reasonable doubt and has questioned opinions based on incomplete records. Children's Health Defense, which featured the family after the deaths, continues to stand by Shaw.
Prosecutor Michael Duke told a judge Shaw changed her story "radically," including about checking on the children overnight. Both parents were home; Duke said only Nathaniel Shaw's account stayed consistent. District Judge Kiley Stuchlik revoked Shaw's $2 million bond this week, agreeing she posed a threat to her new baby, born days before her arrest.