Less than 0.1 mg of Botulinum toxin can cause death.

Fermented and canned vegetables, fruits, meat and seafood products that do not meet food safety conditions are at risk of being contaminated with Clostridium botulinum bacteria and producing Botulinum toxin, which is very dangerous to the health of consumers.

• 10 people got Botulinum poisoning in Quang Nam: Due to eating pickled carp
• 6 vials of Clostridium Botulinum antitoxin have arrived in Vietnam

Source: https://www.sggp.org.vn/chua-den-01mg-doc-to-botulinum-da-co-the-gay-tu-vong-post682601.html