Business

Esther Han

Esther Han is a health reporter at The Sydney Morning Herald and The Sun-Herald. Before that, she spent three years as Fairfax Media's consumer affairs editor. She has also covered food and wine.

Salmon producer Tassal increased its reliance on antibiotics over the space of three years.

Tassal's antibiotics use in salmon quadruples

The rise of superbugs has seen global health experts urge farmers to limit antibiotic use. But one salmon company says diseases have forced it to increase the dosage over the past few years.