Were there infant botulism cases before the ByHeart formula outbreak?

Yes, California reported six infant botulism cases linked to ByHeart formula between November 2024 and June 2025, prior to the current outbreak.

Why is the CDC investigating ByHeart formula?

The CDC is investigating an unusual surge of infant botulism cases since August, with multiple cases linked to ByHeart formula, which has now recalled its products.

Can earlier botulism cases be linked to the current ByHeart outbreak?

Health officials are looking into earlier cases, but definitive links are difficult due to the time elapsed, though experts believe they should be included.

Home / Health / Were Earlier Botulism Cases Tied to ByHeart Formula?

Were Earlier Botulism Cases Tied to ByHeart Formula?

22 Nov

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Summary

California infants were treated for botulism before the current outbreak.
Parents question why earlier cases weren't investigated sooner.
CDC focusing on recent surge but not ruling out earlier links.

Were Earlier Botulism Cases Tied to ByHeart Formula?

Health officials are investigating over 30 infant botulism cases linked to ByHeart baby formula since August. However, parents of infants sickened months earlier are seeking answers. California health officials confirmed six babies consumed ByHeart formula and were treated for botulism between November 2024 and June 2025, preceding the current outbreak.

Despite these earlier reports, authorities state there wasn't enough evidence at the time to suspect a common source. Now, with ByHeart recalling all products and lab tests confirming bacterial contamination, parents question why these earlier incidents did not trigger an immediate investigation. The CDC is prioritizing the current surge but acknowledges that earlier, unlinked cases could potentially be part of the same issue.

Experts suggest earlier cases should be included if ByHeart formula was consumed and babies were treated for botulism. While the CDC notes that definitively linking older cases may be challenging due to the passage of time and potential lack of detailed records, parents are pushing for transparency and answers regarding their children's illnesses.