- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT04884958
A Study to Investigate the Transmission and Burden of PVL-MRSA in Households in Sri Lanka
A Prospective Cohort Study to Investigate the Transmission and Burden of PVL-MRSA in Households in Sri Lanka
Přehled studie
Postavení
Podmínky
Detailní popis
Typ studie
Zápis (Očekávaný)
Kontakty a umístění
Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Metoda odběru vzorků
Studijní populace
The index patients will have clinical infection due to Staphylococcus aureus identified during admission to Anuradhapura General Hospital.
The household contacts will be resident in the same household as the index patient so will be part of the local community served by Anuradhapura General Hospital.
Popis
Inclusion Criteria (index patient):
- Confirmed clinical infection caused by Staphylococcus aureus infection, including skin and soft tissue infection (SSTI) or infection of a normally sterile site.
- Participant is willing and able to give informed consent for participation in the study.
- Male or Female greater or equal to 18 years old.
- Household is within one day's travel of the Hospital.
Inclusion Criteria (household contact):
- Resident in the same household as index participant.
- Participant is willing and able to give informed consent for participation in the study if greater or equal to 18 years old or the parent/legal guardian if participant is less than 18 years old.
- Likely continued household residence for at least 3 months from initial sample collection.
- Able to comply with study requirements.
Exclusion Criteria (index patient):
- Deemed unsuitable by the responsible clinical team/clinician (e.g. terminal illness).
Exclusion Criteria (household contact):
- Not a resident of the household at the time of the index patient hospital admission.
- Deemed unsuitable by the responsible clinical team/clinician (e.g. terminal illness)
- At least 4 household contacts already enrolled to this study.
Studijní plán
Jak je studie koncipována?
Detaily designu
Kohorty a intervence
Skupina / kohorta |
---|
Index patient
Adults with confirmed clinical infection caused by Staphylococcus aureus, including skin and soft tissue infection or infection of a normally sterile site.
These cases will be identified following admission to Anuradhapura General Hospital.
|
Household contacts
This cohort are resident in the same household as the index patient (maximum of four).
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
---|---|---|
Determine the baseline prevalence of Staphylococcus aureus carriage or infection in household contacts of hospital inpatients diagnosed with clinical infection due to Staphylococcus aureus.
Časové okno: First household visit and swabbing of household contacts will be as soon as possible after recruitment of the index case.
|
Index cases will be identified by screening laboratory reports for samples obtained within 72 hours of hospital admission and where Staphylococcus aureus has been isolated from a skin or soft tissue infection or a normally sterile site and there is a clinical diagnosis of infection at that site.
Up to 4 household contacts of this index case will be approached to participate in the study and will have bacterial swabs of the anterior nares and any incidental sites of infection at an initial assessment (as soon after identification and recruitment as possible).
The swabs will be inoculated on to blood agar and MacConkey agar.
Staphylococcus aureus will be identified by colonial morphology, Gram stain, catalase test and coagulase test.
Methicillin resistant Staphylococcus aureus will be detected by disc diffusion method using a cefoxitin disc as per the CLSI protocol.
|
First household visit and swabbing of household contacts will be as soon as possible after recruitment of the index case.
|
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
---|---|---|
Measure the frequency of Staphylococcus aureus transmission events within households over a three month period.
Časové okno: First visit and swabbing of the index and household contacts will be as soon as possible after recruitment of the index case. Both the index and household contacts will have a second visit 3 months later (window 2-4 months).
|
Proportion of household individuals carrying same/similar strains, as determined by similarity in antimicrobial susceptibility profile and genotypic homology.
This will be assessed over a three month time period to detect possible household transmission in contacts who are initially not detected as carriers.
|
First visit and swabbing of the index and household contacts will be as soon as possible after recruitment of the index case. Both the index and household contacts will have a second visit 3 months later (window 2-4 months).
|
Characterise predisposing clinical, demographic or social characteristic differences of individuals/households with evidence of household transmission over a three month period by interview and completion of a proforma.
Časové okno: The baseline interviews will occur as soon as possible after the index patient is recruited and the second interview will occur three months later (window 2-4 months).
|
After consent is obtained, study investigators will visit the dwellings to assess up to 4 household contacts.
A baseline interview using a proforma will be conducted to investigate each individual and their shared dwellings.
This will include identification of: dwelling location, type of dwelling, number of other inhabitants, pet/animal ownership, occupations, duration of residence, recent illness/hospitalisations, recent courses of antimicrobial treatment.
This will be repeated at the follow up visit to ensure there have not been any change in circumstances.
|
The baseline interviews will occur as soon as possible after the index patient is recruited and the second interview will occur three months later (window 2-4 months).
|
Describe virulence characteristics of strains causing a) (invasive) infection and b) higher number of household transmission events
Časové okno: Data analysis will occur throughout and beyond the study recruitment period, expected to take a minimum of 6 months.
|
Analysis of whole genome sequencing and antimicrobial virulence data from isolates that are more associated with infection (in the index and household contacts) and where a high frequency of household transmission has been observed.
|
Data analysis will occur throughout and beyond the study recruitment period, expected to take a minimum of 6 months.
|
Spolupracovníci a vyšetřovatelé
Sponzor
Spolupracovníci
Vyšetřovatelé
- Vrchní vyšetřovatel: Thomas Darton, University of Sheffield
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Očekávaný)
Primární dokončení (Očekávaný)
Dokončení studie (Očekávaný)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další identifikační čísla studie
- 164460
Plán pro data jednotlivých účastníků (IPD)
Plánujete sdílet data jednotlivých účastníků (IPD)?
Informace o lécích a zařízeních, studijní dokumenty
Studuje lékový produkt regulovaný americkým FDA
Studuje produkt zařízení regulovaný americkým úřadem FDA
Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .