The nationwide baby formula shortage two years ago forced many parents to involuntarily switch brands or types. A recent survey from researchers at the University of California, Davis, highlights how these substitutions led to undesirable effects for babies, including vomiting. The study was published in the journal Nutrients.

Nearly half of parents who relied on formula to feed their babies during the infant formula shortage last year resorted to potentially harmful feeding methods, according to a survey from researchers at the University of California, Davis. The study was published in the journal BMC Pediatrics.