Irena Hwang/ProPublica
More from Irena Hwang/ProPublica
![Chicken thigh on red background with graphs to represent salmonella outbreak investigation](https://www.popsci.com/wp-content/uploads/2021/11/15/salmonella-outbreak-investigation-propublica.jpeg?w=675)
Food Safety
How do you track a salmonella outbreak? A data journalist followed the DNA trail to slaughterhouses. How do you track a salmonella outbreak? A data journalist followed the DNA trail to slaughterhouses.
By Irena Hwang/ProPublica
November 15, 2021