Prospective Cohort Study of Cryptosporidium Infection and Shedding in Infants and Their Households
Clinical Infectious Diseases·
- DOI
- 10.1093/cid/ciad059
- PMID
- 36750491
- PMCID
- PMC10273363
- OpenAlex
- W4319461949
- Study type
- Cohort study
- Publisher
- Oxford University Press (OUP)
- Article type
- journal-article
- Integrity
- current
Why this research matters now
High infection rates and prolonged shedding in infants and children, particularly among malnourished children, support that household transmission is an important exposure route for young infants. Treatment of nondiarrheal infection may be essential for interrupting person-to-person transmission within homes and preventing cryptosporidiosis in infants.
Structured evidence summary
Research question
The study aimed to determine rates of cryptosporidiosis within households containing infants during the COVID-19 pandemic.
Study design
A prospective longitudinal cohort study followed 100 families with one infant aged 6-8 months each for 8 months, using weekly illness surveys and stool testing for Cryptosporidium from December 2020 to August 2021.
Population and setting
The cohort consisted of 100 families living in Mirpur, Bangladesh, each with one infant aged 6-8 months at enrollment, along with siblings and adults in the household.
Main findings
Forty-four percent of index infants and 35% of siblings experienced at least one Cryptosporidium infection. Parasite shedding lasted an average of 19 days in index infants, 16 days in children aged 1-5 years, and 16 days in adults. Longer shedding duration was associated with growth faltering in infants. A spike in Cryptosporidium cases occurred in May 2021, coinciding with increased SARS-CoV-2 cases in the region.
Public-health relevance
High infection rates and prolonged shedding in infants and children, particularly among malnourished children, support that household transmission is an important exposure route for young infants. Treatment of nondiarrheal infection may be essential for interrupting person-to-person transmission within homes and preventing cryptosporidiosis in infants.
Important limitations
This summary relies on the supplied single-article abstract and metadata. Access to the full paper is required for decision-grade interpretation of study limitations, including potential selection bias, generalizability beyond the Mirpur setting, and potential confounding by pandemic-related behavioral changes.
GIDS interpretation
The study provides context on household transmission dynamics of Cryptosporidium and identifies prolonged shedding as a factor in infant exposure. The temporal association with SARS-CoV-2 cases noted in May 2021 describes an observed pattern during the study period but does not establish causality between the two diseases.
Related GIDS surveillance
Literature context does not validate, explain, or change a surveillance signal. Exact and contextual relationships are shown separately.
Evidence relationships
This article has 14 auditable classifier relationships to diseases, places, topics, and study design.