Why some babies in Tanzania get vaccines late

Original Title

Determinants of delayed or incomplete diphtheria-tetanus-pertussis vaccination in parallel urban and rural birth cohorts of 30,956 infants in Tanzania

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Summary

This study looked at why some babies in Tanzania don’t get their vaccines on time. It found that in rural areas, babies whose parents didn’t go to school, were born at home, or came from poor families were more likely to miss vaccines. In cities, babies whose moms waited until late in pregnancy to...

Proposed Mechanism

No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.

Quality Analysis
Methodology
66%
Moderate QualityOverall Score
Cohort StudyMedicine

Systematic Reviews & Meta-Analyses

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Randomized Controlled Trials

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Cohort Studies

Max 72

Case-Control Studies

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Cross-Sectional Studies

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Case Reports & Case Series

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Expert Opinion & Narrative Reviews

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StrongerWeaker
Cohort Studies
Level 2
66

66 / 72

Evidence Score

Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.

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