"Botulism spores" refers to tiny particles produced by the bacteria that cause botulism, a serious food poisoning. These spores can survive in different environments and can grow into the bacteria if conditions become favorable. Full definition
As most honey is consumed in the raw form it can contain botulism spores which could be serious - please find an safe alternative. (babycenter.com)
Baby's gastrointestinal system is better able to process pathogens, such as botulism spores in honey. (wholesomebabyfood.momtastic.com)
Babies under one year of age don't have a very sturdy immune system yet and also haven't developed enough acidity in their stomachs to neutralize the effects of botulism spores. (abckidsinc.com)