Milk product safety and household food hygiene influence bacterial contamination of infant food in peri-urban Kenya

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cg.authorship.typesCGIAR and developing country instituteen
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Food Policy Research Instituteen
cg.contributor.affiliationAfrica Population Health Research Centeren
cg.contributor.affiliationUniversity of Iowaen
cg.contributor.affiliationLondon School of Hygiene and Tropical Medicineen
cg.contributor.affiliationGreat Lakes University of Kisumuen
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.donorMinistry of Foreign Affairs, the Netherlandsen
cg.contributor.donorCGIAR Trust Funden
cg.contributor.donorGovernment of the United Kingdomen
cg.contributor.initiativeOne Health
cg.coverage.countryKenya
cg.coverage.iso3166-alpha2KE
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierVivian Hoffmann: 0000-0002-6464-3748
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.3389/fpubh.2021.772892en
cg.identifier.projectIFPRI - Markets, Trade, and Institutions Division
cg.identifier.publicationRankNot ranked
cg.isijournalISI Journalen
cg.issn2296-2565en
cg.journalFrontiers in Public Healthen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaResilient Agrifood Systems
cg.subject.impactAreaNutrition, health and food security
cg.subject.sdgSDG 2 - Zero hungeren
cg.subject.sdgSDG 3 - Good health and well-beingen
cg.volume9en
dc.contributor.authorHoffmann, Vivianen
dc.contributor.authorSimiyu, S.en
dc.contributor.authorSewell, D.K.en
dc.contributor.authorTsai, K.en
dc.contributor.authorCumming, O.en
dc.contributor.authorMumma, J.en
dc.contributor.authorBaker, K.K.en
dc.date.accessioned2022-12-21T08:16:48Zen
dc.date.available2022-12-21T08:16:48Zen
dc.identifier.urihttps://hdl.handle.net/10568/126147
dc.titleMilk product safety and household food hygiene influence bacterial contamination of infant food in peri-urban Kenyaen
dcterms.abstractBackground: Milk is a common infant food in peri-urban Kenya that can transmit diarrhea-causing enteric pathogens. Little is known about how contamination of milk at point of purchase and household handling of milk-based infant foods contribute to infant exposure to enteric pathogens. Objective: To compare the prevalence and concentrations of bacterial indicator organisms and enteric pathogens in unpackaged, fresh pasteurized, and ultra-high temperature (UHT) treated milk at purchase and assess the influence of the type of milk used to prepare infant food on contamination of this food. Methods: Paired samples of purchased milk and infant food prepared with this milk were obtained from 188 households in low-income neighborhoods in Kisumu, Kenya. Samples were cultured on selective media to isolate Salmonella enterica, Shigella spp., Klebsiella aerogenes, Proteus spp., and Escherichia coli, with pathogens validated by PCR. Probability of detection of these bacteria was compared by milk product treatment and packaging method, and between milk at point of purchase vs. food at point of infant consumption. Results: Unpackaged milk was most contaminated at point of purchase, but bacterial contamination was also present in pasteurized and UHT milk at purchase. Presence of bacteria in UHT and fresh pasteurized milk at purchase predicted presence of the same bacteria type in infant food. Prevalence of bacterial contamination and concentration level for bacterial indicators generally increased between point of purchase and consumption in UHT and fresh pasteurized milk-based food but decreased in unpackaged milk-based food. Prevalence of the four fecal bacteria were similar in infant foods prepared with each type of milk. Conclusion: Both pre-market contamination and post-purchase handling influence the likelihood of infants ingesting foods contaminated by diarrheal pathogens.en
dcterms.accessRightsOpen Access
dcterms.audienceAcademicsen
dcterms.audienceScientistsen
dcterms.available2022-02-08
dcterms.bibliographicCitationHoffmann, V., Simiyu, S., Sewell, D.K., Tsai, K., Cumming, O., Mumma, J. and Baker, K.K. 2022. Milk product safety and household food hygiene influence bacterial contamination of infant food in peri-urban Kenya. Frontiers in Public Health 9: 772892.en
dcterms.extent772892en
dcterms.issued2022-02-08
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherFrontiers Mediaen
dcterms.replaceshttps://ebrary.ifpri.org/digital/collection/p15738coll5/id/8159en
dcterms.subjectfood safetyen
dcterms.subjectanimal productsen
dcterms.subjectdairyingen
dcterms.subjecthealthen
dcterms.subjectmilk productsen
dcterms.subjectinfant foodsen
dcterms.subjecthouseholdsen
dcterms.subjectfood hygieneen
dcterms.subjectbiological contaminationen
dcterms.subjectperi-urban agricultureen
dcterms.typeJournal Article

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