I am part of a team of 5 people who care for an 81 year old woman. She has had several yeast infections in the past year. Today I found 3 packets of active dry yeast in a cabinet where some of her meds are kept, one of which was open. I'm worried another one of the caregivers could be using this to intentionally cause these infections.

I know that typical yeast infections are cause by candida and this is a different strain (saccharomyces cerevisiae if I understand correctly). It seems that it could potentially cause a similar infection though.

I hope that I am wrong about whats going on but haven't found another explanation. Is there any legitimate reason why active dry yeast might be in a medicine cabinet?