Pneumococcal Carriage Duration
NIS103487 Duration of Streptococcus Pneumoniae Carriage in U.S. Children Under Five: A Pilot Longitudinal Study
Studieoversikt
Status
Status
Forhold
Forhold
Intervensjon / Behandling
Intervensjon / Behandling
Studietype
Studietype
Registrering (Antatt)
Registrering
Kontakter og plasseringer
Studiekontakt
Studiekontakt
- Navn: Dr. Amoy Fraser, PhD
- Telefonnummer: 407-266-8742
- E-post: Amoy.Fraser@UCF.edu
Studer Kontakt Backup
- Navn: Aniya Barclay, MS
- Telefonnummer: 407-266-8742
- E-post: Aniya.Barclay@UCF.edu
Studiesteder
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Florida
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Orlando, Florida, Forente stater, 32827
- Rekruttering
- University of Central Florida
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Ta kontakt med:
- Dr. Amoy Fraser, PhD
- Telefonnummer: 407-266-8742
- E-post: Amoy.Fraser@UCF.edu
-
Ta kontakt med:
- Aniya Barclay, MS
- Telefonnummer: 407-266-8742
- E-post: Aniya.Barclay@UCF.edu
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Barn
Tar imot friske frivillige
Prøvetakingsmetode
Studiepopulasjon
Beskrivelse
Inclusion Criteria:
- Are older than 28 days and under 4 years of age at the time of enrollment.
Have a parent or legal guardian who:
- Provides written informed consent.
- Is able to read and speak English or Spanish.
- Agrees to comply with all study procedures, including completion of questionnaires and biweekly oropharyngeal (OP) swab collections from the child for a period of 12 months.
Exclusion Criteria:
- History of chronic medical conditions or immunocompromising conditions that may influence pneumococcal carriage or study participation, such as:
- cystic fibrosis
- cerebral palsy
- neuromuscular disorders
- congenital heart disease
- known congenital or acquired immunodeficiencies
- sickle cell disease
- undergoing immunosuppressive therapy (e.g., systemic corticosteroids ≥2 mg/kg/day for ≥14 days, chemotherapy, biologics)
Studieplan
Hvordan er studiet utformet?
Designdetaljer
Antall grupper / kohorter
Kohorter og intervensjoner
Gruppe / KohortGruppe / Kohort |
Intervensjon / BehandlingIntervensjon / Behandling |
|---|---|
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Main Cohort
60 healthy children under 4 years of age (30 children aged 0-1 years, 30 children aged 2-4 years) residing in Orlando, Florida.
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At each study visit, a double-tipped OP swab will be collected by trained clinical research staff.
All swabs will be collected using a standard protocol.
There will be 26 total study visits over the course of one year.
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Hva måler studien?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Estimate the age- and serotype-specific carriage duration of Streptococcus pneumoniae in children aged 0-4 years.
Tidsramme: One year
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Respiratory samples will be tested to determine whether Streptococcus pneumoniae (pneumococcus) is present using standard laboratory methods and genetic testing.
If found, the bacteria will be genetically analyzed to identify its type (serotype) and compare it with other strains.
Researchers will measure when a child first becomes colonized, when the bacteria are cleared (after two negative tests), how long colonization lasts, and how quickly new colonization occurs.
Genetic analysis will determine whether the same strain persists or a new strain is acquired.
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One year
|
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Estimate the age- and serotype-specific co-colonization rates of S. pneumoniae in children aged 0-4 years.
Tidsramme: One year
|
Respiratory samples will be tested to determine whether Streptococcus pneumoniae (pneumococcus) is present with other pneumococcal intra-subject lineages (ISL) using standard laboratory methods and genetic testing.
If found, the bacteria will be genetically analyzed to identify the different types (serotype) and how many there are.
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One year
|
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Evaluate the feasibility and scalability of expanding the study to a larger sample size
Tidsramme: One year
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One year
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Determine which viral and bacterial pathogens are present in respiratory specimens collected from enrolled children
Tidsramme: One year
|
Respiratory samples will be tested for common viruses and bacteria using advanced laboratory methods.
Researchers will also record whether participants have symptoms or are carrying these bacteria without feeling sick.
They will track when a participant first acquires a new respiratory virus (one that was not detected at the previous visit) and calculate how often new infections occur over time, including comparisons by age group.
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One year
|
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Assessment of study methodologies
Tidsramme: One year
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Researchers will compare different laboratory methods ( to see how well they detect Streptococcus pneumoniae and identify its type.
They will also evaluate whether collecting samples every two weeks or once a month provides better information on bacterial carriage, new infections, and missing data.
The study will compare different methods for analyzing the respiratory microbiome (the community of bacteria in the airways) and use computer models to determine whether microbiome patterns can predict pneumococcal carriage.
Finally, researchers will compare the costs and practicality of different sampling schedules, collection methods, and laboratory tests to help guide future studies.
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One year
|
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To identify carriage of pneumococcal serotypes among participants in the context of PCV vaccine history.
Tidsramme: One year
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The PI will identify the carriage of vaccine serotypes (VT) included in the most recent PCV administered to each participant.
This analysis will compare VT versus NVT carriage prevalence, stratified by age group, vaccine, and time since vaccination.
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One year
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Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Samarbeidspartnere
Samarbeidspartnere
Etterforskere
Etterforskere
- Hovedetterforsker: Dr. Taj Azarian, PhD, University of Central Florida
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Studiestart
Primær fullføring (Antatt)
Primær fullføring
Studiet fullført (Antatt)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Andre studie-ID-numre
Andre studie-ID-numre
- STUDY00008626
Legemiddel- og utstyrsinformasjon, studiedokumenter
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