A Cohort Study to Determine the Incidence of Dengue Fever and to Build Capacity for Dengue Vaccine Trials in Dengue-endemic Regions of South Asia
Primary Purpose
Dengue
Status
Completed
Phase
Not Applicable
Locations
Sri Lanka
Study Type
Interventional
Intervention
Blood sample collection
Sponsored by
About this trial
This is an interventional other trial for Dengue focused on measuring Dengue, Non-laboratory confirmed dengue (non-LCD), Acute febrile illness (AFI), Laboratory confirmed dengue (LCD)
Eligibility Criteria
Inclusion Criteria:
- Subject and/or subject's parent(s)/legally acceptable representative(s) (LAR[s]) who, in the opinion of the investigator, can and will comply with the requirements of the protocol. (e.g., willingness to go to the hospital/clinic for visit[s] in case of AFI, able to observe the signs of dengue and to understand how to take and report body temperature, etc.).
- Signed/thumb-printed (and video recorded if required by law) informed consent (and assent if applicable) must be obtained from the subject/subject's parent(s)/LAR(s) at the hospital/clinic or during a home visit. If the subject/subject's parent(s)/LAR(s) are illiterate, the informed consent form (ICF) (or informed assent form [IAF] when applicable) will be countersigned by an impartial witness.
- Subject is part of a household with at least one child (aged less than 18 years) and in which informed consent (and assent if applicable) to study participation was obtained from at least one adult and one child.
- Male or female aged between and including 6 months and 50 years at the time of enrolment.
- Subject who plans, at the time of enrolment, to remain at same residence/study area during the two-year study period.
Exclusion Criteria:
- Child in care.
- Participation (current or planned) in another epidemiological study or in a clinical trial that would conflict with the current study, based on investigator's judgement.
- Terminal illness based on investigator's judgement.
- Mental incapacity based on investigator's judgement.
Sites / Locations
- GSK Investigational Site
Arms of the Study
Arm 1
Arm Type
Experimental
Arm Label
AFI Group
Arm Description
Population living in randomly selected households in geographically-defined communities. Households including at least one member aged less than 18 years will be considered eligible if at least one adult (aged no more than 50 years) and one child (aged less than 18 years) consent (and assent if applicable) to participate in the study.
Outcomes
Primary Outcome Measures
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Dengue (LCD) Overall, and by Age Group
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD) OR date of last contact OR date of death. An AFI due to LCD was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°Celsius [C]/≥ 100.4°Farhenheit [F] on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue through dengue Reverse Transcriptase quantitative Polymerase Chain Reaction (RT-qPCR) on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F).
Secondary Outcome Measures
Incidence Rate of Acute Febrile Illness (AFI) Due to Non-Laboratory Confirmed Dengue (Non-LCD) Overall, and by Age Group
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to non-LCD) OR date of last contact OR date of death. An AFI due to non-LCD was confirmed if all of the following criteria were met: Fever (body temperature ≥ 38°C/≥ 100.4°F) on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart, AND Dengue RT-qPCR result on the acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F) was (valid but) negative for dengue.
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Sero Type 1 Dengue Overall, and by Age Group.
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD Sero Type 1) OR date of last contact OR date of death. An AFI due to LCD Sero Type 1 was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°C/≥ 100.4°F on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue Sero Type 1 through RT-qPCR on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F).
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Sero Type 2 Dengue Overall, and by Age Group
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD Sero Type 2) OR date of last contact OR date of death. An AFI due to LCD Sero Type 2 was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°C/≥ 100.4°F on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue Sero Type 2 through RT-qPCR on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F).
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Sero Type 3 Dengue Overall, and by Age Group
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD Sero Type 3) OR date of last contact OR date of death. An AFI due to LCD Sero Type 3 was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°C/≥ 100.4°F on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue Sero Type 3 through RT-qPCR on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F)
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Sero Type 4 Dengue Overall, and by Age Group
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD Sero Type 4) OR date of last contact OR date of death. An AFI due to LCD Sero Type 4 was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°C/≥ 100.4°F on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue Sero Type 4 through RT-qPCR on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F)
Number of Acute Febrile Illness Due to Laboratory Confirmed Dengue Presenting a Sign or a Symptom of Interest (Any Intensity) During the 7-day Period Following the Onset of Each Episode of AFI Due to LCD.
Description of signs and symptoms of AFI due to LCD included the percentage of AFI presenting each sign or symptom (any intensity) during the 7-day period from the onset of fever (body temperature 38°C/100.4°F).
Number of Acute Febrile Illness Due to Laboratory Confirmed Dengue Presenting a Sign or a Symptom of Interest (Grade 3) During the 7-day Period Following the Onset of Each Episode of AFI Due to LCD
Description of signs and symptoms of AFI due to LCD included the percentage of AFI presenting each sign or symptom (grade 3) during the 7-day period from the onset of fever (body temperature 38°C/100.4°F).
Number of Acute Febrile Illness Due to Non-Laboratory Confirmed Dengue Presenting a Sign or a Symptom of Interest (Any Intensity) During the 7-day Period Following the Onset of Each Episode of AFI Due to Non-LCD
Description of signs and symptoms of AFI due to non-LCD included the percentage of AFI presenting each sign or symptom (any intensity) during the 7-day period from the onset of fever (body temperature 38°C/100.4°F).
Number of Acute Febrile Illness Due to Non-Laboratory Confirmed Dengue Presenting a Sign or a Symptom of Interest (Grade 3) During the 7-day Period Following the Onset of Each Episode of AFI Due to Non-LCD
Description of signs and symptoms of AFI due to non-LCD included the percentage of AFI presenting each sign or symptom (grade 3) during the 7-day period from the onset of fever (body temperature 38°C/100.4°F).
Number of Subjects With Serious Adverse Events (SAEs) Related to a Study Procedure
Serious adverse events (SAEs) assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity.
Full Information
NCT ID
NCT02570152
First Posted
October 5, 2015
Last Updated
June 16, 2020
Sponsor
GlaxoSmithKline
Collaborators
Ministry of Health, Sri Lanka
1. Study Identification
Unique Protocol Identification Number
NCT02570152
Brief Title
A Cohort Study to Determine the Incidence of Dengue Fever and to Build Capacity for Dengue Vaccine Trials in Dengue-endemic Regions of South Asia
Official Title
A Cohort Study to Determine the Incidence of Dengue Fever and to Build Capacity for Dengue Vaccine Trials in Dengue-endemic Regions of South Asia
Study Type
Interventional
2. Study Status
Record Verification Date
June 2020
Overall Recruitment Status
Completed
Study Start Date
June 1, 2016 (Actual)
Primary Completion Date
June 28, 2019 (Actual)
Study Completion Date
June 28, 2019 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
GlaxoSmithKline
Collaborators
Ministry of Health, Sri Lanka
4. Oversight
5. Study Description
Brief Summary
The purpose of this study is to determine the incidence of dengue fever and to build capacity for dengue vaccine trials in dengue-endemic regions of South Asia.
Detailed Description
This study aims to estimate the burden of dengue illness in selected sites South Asia and to prepare sites for the conduct of future vaccine efficacy trials.
Operational goals include:
Build long-term collaboration with sites in dengue-endemic regions of South Asia where the incidence of clinical dengue illness can be studied.
Establish dengue surveillance cohorts that can be followed long-term.
Establish operational feasibility of future Phase III studies with regard to recruitment, case capture and sampling procedures.
Prepare sites for participation in Phase III clinical endpoint studies.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Dengue
Keywords
Dengue, Non-laboratory confirmed dengue (non-LCD), Acute febrile illness (AFI), Laboratory confirmed dengue (LCD)
7. Study Design
Primary Purpose
Other
Study Phase
Not Applicable
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
N/A
Enrollment
2004 (Actual)
8. Arms, Groups, and Interventions
Arm Title
AFI Group
Arm Type
Experimental
Arm Description
Population living in randomly selected households in geographically-defined communities. Households including at least one member aged less than 18 years will be considered eligible if at least one adult (aged no more than 50 years) and one child (aged less than 18 years) consent (and assent if applicable) to participate in the study.
Intervention Type
Procedure
Intervention Name(s)
Blood sample collection
Intervention Description
Blood samples will be collected during the Suspected Dengue First Visit. All study subjects with AFI (fever [body temperature ≥ 38°C/≥ 100.4°F] on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart) should be seen at a designated study hospital/clinic by the study physician. The Suspected Dengue First Visit should be scheduled within 7 days from the onset of fever (Days 2-7) and should ideally take place on the second day of fever (Day 2).
Primary Outcome Measure Information:
Title
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Dengue (LCD) Overall, and by Age Group
Description
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD) OR date of last contact OR date of death. An AFI due to LCD was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°Celsius [C]/≥ 100.4°Farhenheit [F] on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue through dengue Reverse Transcriptase quantitative Polymerase Chain Reaction (RT-qPCR) on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F).
Time Frame
From first visit to last visit (approximatively 2 years per subject)
Secondary Outcome Measure Information:
Title
Incidence Rate of Acute Febrile Illness (AFI) Due to Non-Laboratory Confirmed Dengue (Non-LCD) Overall, and by Age Group
Description
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to non-LCD) OR date of last contact OR date of death. An AFI due to non-LCD was confirmed if all of the following criteria were met: Fever (body temperature ≥ 38°C/≥ 100.4°F) on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart, AND Dengue RT-qPCR result on the acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F) was (valid but) negative for dengue.
Time Frame
From first visit to last visit (approximatively 2 years per subject)
Title
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Sero Type 1 Dengue Overall, and by Age Group.
Description
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD Sero Type 1) OR date of last contact OR date of death. An AFI due to LCD Sero Type 1 was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°C/≥ 100.4°F on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue Sero Type 1 through RT-qPCR on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F).
Time Frame
From first visit to last visit (approximatively 2 years per subject)
Title
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Sero Type 2 Dengue Overall, and by Age Group
Description
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD Sero Type 2) OR date of last contact OR date of death. An AFI due to LCD Sero Type 2 was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°C/≥ 100.4°F on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue Sero Type 2 through RT-qPCR on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F).
Time Frame
From first visit to last visit (approximatively 2 years per subject)
Title
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Sero Type 3 Dengue Overall, and by Age Group
Description
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD Sero Type 3) OR date of last contact OR date of death. An AFI due to LCD Sero Type 3 was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°C/≥ 100.4°F on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue Sero Type 3 through RT-qPCR on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F)
Time Frame
From first visit to last visit (approximatively 2 years per subject)
Title
Incidence Rate of Acute Febrile Illness (AFI) Due to Laboratory Confirmed Sero Type 4 Dengue Overall, and by Age Group
Description
The incidence rate of first event (IR per 1000 person-years) was calculated by dividing the number of subjects reporting at least one episode of event during the follow-up period by the total person-year at risk. The person-time at risk for an event of interest was calculated as the duration between the date of enrolment and the end of the at-risk period or the earliest of the following: onset date of event of interest (e.g. first episode of AFI due to LCD Sero Type 4) OR date of last contact OR date of death. An AFI due to LCD Sero Type 4 was confirmed if all of the following criteria were met: Fever (body temperature greater than or equal to (≥) 38°C/≥ 100.4°F on ≥ 2 consecutive calendar days, measured at least twice, at least 8 hours apart AND Laboratory confirmation of dengue Sero Type 4 through RT-qPCR on acute serum sample taken during the 7-day period (Days 2-7) from the onset of fever (body temperature ≥ 38°C/≥ 100.4°F)
Time Frame
From first visit to last visit (approximatively 2 years per subject)
Title
Number of Acute Febrile Illness Due to Laboratory Confirmed Dengue Presenting a Sign or a Symptom of Interest (Any Intensity) During the 7-day Period Following the Onset of Each Episode of AFI Due to LCD.
Description
Description of signs and symptoms of AFI due to LCD included the percentage of AFI presenting each sign or symptom (any intensity) during the 7-day period from the onset of fever (body temperature 38°C/100.4°F).
Time Frame
At each day during the 7-day period following the onset of each episode of AFI due to LCD
Title
Number of Acute Febrile Illness Due to Laboratory Confirmed Dengue Presenting a Sign or a Symptom of Interest (Grade 3) During the 7-day Period Following the Onset of Each Episode of AFI Due to LCD
Description
Description of signs and symptoms of AFI due to LCD included the percentage of AFI presenting each sign or symptom (grade 3) during the 7-day period from the onset of fever (body temperature 38°C/100.4°F).
Time Frame
At each day during the 7-day period following the onset of each episode of AFI due to LCD
Title
Number of Acute Febrile Illness Due to Non-Laboratory Confirmed Dengue Presenting a Sign or a Symptom of Interest (Any Intensity) During the 7-day Period Following the Onset of Each Episode of AFI Due to Non-LCD
Description
Description of signs and symptoms of AFI due to non-LCD included the percentage of AFI presenting each sign or symptom (any intensity) during the 7-day period from the onset of fever (body temperature 38°C/100.4°F).
Time Frame
At each day during the 7-day period following the onset of each episode of AFI due to non-LCD
Title
Number of Acute Febrile Illness Due to Non-Laboratory Confirmed Dengue Presenting a Sign or a Symptom of Interest (Grade 3) During the 7-day Period Following the Onset of Each Episode of AFI Due to Non-LCD
Description
Description of signs and symptoms of AFI due to non-LCD included the percentage of AFI presenting each sign or symptom (grade 3) during the 7-day period from the onset of fever (body temperature 38°C/100.4°F).
Time Frame
At each day during the 7-day period following the onset of each episode of AFI due to non-LCD
Title
Number of Subjects With Serious Adverse Events (SAEs) Related to a Study Procedure
Description
Serious adverse events (SAEs) assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity.
Time Frame
From first visit to last visit (approximatively 2 years per subject)
10. Eligibility
Sex
All
Minimum Age & Unit of Time
6 Months
Maximum Age & Unit of Time
50 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria:
Subject and/or subject's parent(s)/legally acceptable representative(s) (LAR[s]) who, in the opinion of the investigator, can and will comply with the requirements of the protocol. (e.g., willingness to go to the hospital/clinic for visit[s] in case of AFI, able to observe the signs of dengue and to understand how to take and report body temperature, etc.).
Signed/thumb-printed (and video recorded if required by law) informed consent (and assent if applicable) must be obtained from the subject/subject's parent(s)/LAR(s) at the hospital/clinic or during a home visit. If the subject/subject's parent(s)/LAR(s) are illiterate, the informed consent form (ICF) (or informed assent form [IAF] when applicable) will be countersigned by an impartial witness.
Subject is part of a household with at least one child (aged less than 18 years) and in which informed consent (and assent if applicable) to study participation was obtained from at least one adult and one child.
Male or female aged between and including 6 months and 50 years at the time of enrolment.
Subject who plans, at the time of enrolment, to remain at same residence/study area during the two-year study period.
Exclusion Criteria:
Child in care.
Participation (current or planned) in another epidemiological study or in a clinical trial that would conflict with the current study, based on investigator's judgement.
Terminal illness based on investigator's judgement.
Mental incapacity based on investigator's judgement.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
GSK Clinical Trials
Organizational Affiliation
GlaxoSmithKline
Official's Role
Study Director
Facility Information:
Facility Name
GSK Investigational Site
City
Colombo
Country
Sri Lanka
12. IPD Sharing Statement
Citations:
PubMed Identifier
34724624
Citation
Tissera H, Samaraweera P, de Boer M, Gandhi S, Malvaux L, Mehta S, Palihawadana P, Vantomme V, Paris R, Schmidt A. The Burden of Acute Febrile Illness Attributable to Dengue Virus Infection in Sri Lanka: A Single-Center 2-Year Prospective Cohort Study (2016-2019). Am J Trop Med Hyg. 2021 Nov 1;106(1):160-167. doi: 10.4269/ajtmh.21-0604.
Results Reference
derived
Learn more about this trial
A Cohort Study to Determine the Incidence of Dengue Fever and to Build Capacity for Dengue Vaccine Trials in Dengue-endemic Regions of South Asia
We'll reach out to this number within 24 hrs