Outbreak of Foodborne Botulism Associated With Prepackaged Pouches of Liquid Herbal Tea.

Background: In 2017, local public health authorities in California received reports of 2 elderly patients with suspected botulism who knew each other socially. A multijurisdictional investigation was conducted to determine the source.

Methods: Investigators reviewed medical records, interviewed family to establish food and drink histories, and inspected a facility that produced liquid herbal tea.