Streptococcus salivarius 24SMB
Streptococcus salivarius 24SMB is an upper respiratory tract commensal studied primarily as a nasal spray "bacteriotherapy" — a term referring to the deliberate introduction of beneficial bacteria to compete with pathogens at mucosal surfaces. Multiple observational studies and at least one randomized controlled trial in pediatric populations have examined intranasal administration of 24SMB combined with Streptococcus oralis 89a in connection with recurrent acute otitis media (middle ear infections) and upper respiratory tract infections. In vitro work has examined 24SMB's interactions with biofilm formation by common respiratory pathogens. The evidence base is primarily observational and pediatric; findings should not be generalized to other populations or delivery routes without further study. These are research topics, not findings; the papers do not establish that this strain treats or prevents any condition.
Where it's been studied Tags come from a conservative keyword scan of each paper's title, abstract, and summary. A tag is research coverage, not measured effect. How we classify this →
Share of this strain's 12 body-system-tagged papers that concern each system. Research coverage, not measured effect.
Symptoms in the research A tag means the paper's text names the symptom or condition — research coverage, not evidence of benefit. How we classify this →
Share of this strain's 11 symptom-tagged papers that mention each symptom or condition. Research coverage, not evidence of benefit.
Research Study-type filters use AI-classified labels, audited but not guaranteed — check the paper itself before leaning on one. How we classify this →
15 papers reference this strain in the probiotic database.
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Citations
Selected papers that name this strain.
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[1]
PMID 37874401 →Topical administration of S. salivarius 24SMB-S. oralis 89a in children with adenoidal disease: a double-blind controlled trial· European Journal of Pediatrics · 2023