Commercially produced beef jerky is generally safe during pregnancy. The drying and curing process kills most bacteria. However, jerky is very high in sodium (about 590mg per ounce) and contains nitrates. Homemade jerky may carry higher risk.
A "Use Caution" rating means this food is generally fine during pregnancy but comes with a specific factor worth managing — a daily limit, a preparation requirement, or a moderation guideline — rather than a reason to avoid it outright. These ratings reflect general guidance from the FDA, ACOG, CDC, and USDA. The goal of the "caution" label is to flag what to pay attention to, not to suggest the food is unsafe when that factor is properly managed.