Plain English Summary
Background and study aims
Immunization is one of the most successful and cost-effective health interventions and is estimated to prevent between 2 and 3 million deaths annually worldwide. Immunization coverage in India has improved in recent years but an estimated 1 in 7 children in India do not receive immunization. Reaching these populations requires more effective immunization systems, and these in turn require improved immunization data. Immunization data in India is currently not available in high quality, at the right time and in the right place to support system decision making. Currently, the Mother and Child Protection (MCP) card immunization record is filled out by the ANMs at the point of service (usually, the local Village Health and Nutrition Day (VHND)), but entry of immunization data occurs offline, at the Primary Health Centre (PHC), with delays. New systems for data collection involving tablet computers are planned, but manual data entry poses important challenges for these health workers. Without timely and accurate data, vaccine supply and demand prediction suffer, leading to poorer coverage and follow-up of immunization.
Who can participate?
This study will take place in Uttar Pradesh, a north Indian state with poor health and development indicators. Two administrative blocks from a lagging district were identified for the study based on low immunization performance, inputs from local government authorities and sample size requirements (reflecting the number of health workers and immunization microplanning areas). A sample of immunization microplanning areas will be identified in each block. In these areas, we will recruit all frontline workers (ANM, ASHA, AWW) involved in delivery of immunization services. We will also recruit all families and primary caregivers (usually mothers) of children 0 to 23 months of age.
What does the study involve?
We have developed an application to help frontline workers equipped with a mobile smartphone in their tasks, which will ultimately help to strengthen immunization planning and other services for beneficiaries. This mobile phone application will change the way that immunization and health data collected by the health workers are recorded and used. The new mobile phone application will collect immunization data in real time at point-of-service using image-recognition technology (“optical scanning”). The new system will also enable direct communication with beneficiaries to offer information about immunisation services and appointment reminders. The new system is known as “Tika Vaani” [“vaccine voice” in Hindi].
We will conduct a controlled before-and-after (CBA) study in which one administrative block receives the optical scanning intervention and one administrative block serves as a control group and does not receive the intervention. Observations will be made before and after the implementation of the optical scanning intervention in intervention and control areas.
We will study outcomes related to routine immunization performance, including health worker time allocation, vaccination drop-outs, data quality, equity and timeliness of vaccination, and missed opportunities for vaccination. We will also conduct a process evaluation to identify any barriers to success and areas for improvement.
What are the possible benefits and risks of participating?
There are no disadvantages or risks to participating in the study beyond those encountered in everyday life. Participants will not gain any personal benefit from participating in this study.
Through this research, we hope to learn more about how to improve the performance of immunisation services. This will contribute to improved coverage, timeliness and completeness of immunization -- and ultimately, to improved health and well-being -- for currently left out individuals and communities.
Where is the study run from?
This study is run by OnionDev Technologies Pvt Ltd (Gram Vaani), headquartered in Gurgaon, India.
When is the study starting and how long is it expected to run for?
The study is expected to start on August 15, 2019 and run for 12 months. The anticipated end date is September 1, 2020.
Who is funding the study?
This study is funded by the Government of India via the Department of Biotechnology (DBT) Biotechnology Industry Research Assistance Council (BIRAC) and the Bill & Melinda Gates Foundation.
Who is the main contact?
Dr. Aaditeshwar Seth
Co-Founder & Director, Onion Dev Technologies Pvt Ltd. (Gram Vaani)
Associate Professor of Computer Science, Indian Institute of Technology (IIT), Delhi
Dr Mira Johri
Département de gestion
et de politique de santé
Université de Montréal
Mr Rohit Singh
OnionDev Technologies Pvt. Ltd. (Gram Vaani)
Address: Building No. 346
Udyog Vihar Ph-II
Near People Chowk
+91 98993 89636
Image recognition based data entry processes to ensure immunization completeness and auditing of reported data: the Tika Vaani platform
We will study the effects on India's routine immunization system of introducing a new technology platform (Tika Vaani) for health workers to collect immunization data in real time at point-of-service using image-recognition technology via mobile phone. The image-recognition technology is linked to an interactive voice-response system for direct communication with beneficiaries and will make data immediately available to facilitate system planning and tailored interventions.
We hypothesize that introduction of this new technology will contribute to improved performance of routine immunization (RI) services and improved coverage, timeliness and completeness of immunization among children 0 to 23 months of age.
Approval pending, Institutional Committee for Ethics and Review of Research, OnionDev Technologies Pvt. Ltd. (Building No. 346, 1st Floor, Udyog Vihar Phase II, Near People Chowk, Gurgaon - 122016, India; email@example.com; +91 (0)124-4303248), ref: n/a
A quasi-experimental intervention study using a controlled before-and-after (CBA) design
Primary study design
Secondary study design
Non randomised study
Patient information sheet
Not available in web format, please use contact details to request participant information sheet
Frontline health workers (assistant nurse midwives, or “ANMs”) equipped with a mobile smart phone will collect immunization data in real time at immunization sessions. The easy-to-use Tika Vaani mobile phone application scans the Mother and Child Protection card immunization record using optical character recognition (OCR) methods. Its aim is to reduce burdensome paper-based documentation and increase the availability of actionable information at the point of care.
Observations will be made at multiple time points before and after the implementation of the optical scanning intervention, both in a group that receives the intervention and in a control group that does not. Data will be analyzed using the differences-in-differences (DiD) method.
The study will emulate a target trial in which the intervention group receives the multicomponent Tika Vaani optical scanning intervention. The intervention is designed to support the delivery of routine immunisation services in India. The control group will be defined as eligible to receive the intervention but not in receipt of it. Members of the control group will receive the usual services offered by the Government of India.
The study will take place in poor-performing administrative blocks (each of approximately 200,000 population) in a rural area of Uttar Pradesh. Study blocks will be assigned to either intervention or control group by government officials.
The Tika Vaani optical scanning intervention has three main components:
1. Functionalities for data collection and session planning (directed to health workers (ANMs, ASHAs))
2. Beneficiary communication (directed to caregivers of children 0 to 23 months of age))
3. Availability of data for real-time planning & course correction (directed to health systems managers & planners – not a focus of this study phase)
Data collection and follow-up:
1. ANMs in the intervention group will use the new Tika Vaani mobile phone application for data collection and work planning at all immunization sessions during the 6-month intervention period (comprising the 2-month intervention introduction and the 4-month post-intervention periods). ANMs will be followed over the entire study period (encompassing the 4-month pre-intervention period, 2-month intervention introduction period, and the 4-month post-intervention period). ASHA (community health) workers present at each immunisation session will also provide data. Each ASHA workers is expected to be observed only once during the study.
2. Beneficiaries (caregivers of children 0-23 months of age) in the intervention group will be contacted via mobile phone during the 6-month intervention period for two purposes: (1) to remind families about vaccination appointments; (2) to provide additional information post-vaccination. Each pre-immunisation and post-immunisation contact will take less than 2 minutes.
Primary outcome measure
1. Average time to vaccinate per beneficiary (for health workers) defined as the total time spent by frontline workers in each vaccination-related activity for the Village Health and Nutrition Day (VHND) (including activities undertaken during the observed immunisation session and the non-observed activities pre- and post-session), divided by the number of beneficiaries (children 0-23 months of age vaccinated at that session). The total time spent by frontline workers will be the sum of the time spent by the ANM and the ASHA worker. The variable will be measured through non-participant observation of the immunisation session by field staff using a structured questionnaire. Each immunisation session takes place on a single day and lasts for approximately 6 hours. Each ANM will be observed 3 times in the 4-month pre-intervention period and 3 times in the 4-month post-intervention period.
2. Immunization dropout from receipt of the first dose to the third dose of pentavalent vaccine (among children eligible for vaccination). Child vaccination status will be measured through a household survey questionnaire. During the household survey, vaccination data will be taken from the immunisation card, or, in the absence of the card, by caregiver report. Each household will be surveyed only once, either in the 4-month pre-intervention period, or the 4-month post-intervention period.
Secondary outcome measures
1. Process outcomes including intervention fidelity, health worker acceptability, uptake and satisfaction, beneficiary acceptability, uptake, satisfaction, and trust will be collected using quantitative methods (non-participant observation, structured questionnaires, linkage to administrative data) and qualitative methods (key informant interviews and focus groups with government officials, health workers, beneficiaries, and field staff; community meetings). Quantitative measures will be collected continuously over the entire study period (encompassing the 4-month pre-intervention period, 2-month intervention introduction period, and the 4-month post-intervention period). Qualitative interviews will be conducted in months 11 and 12 (study end line)
2. Measures of data quality [including agreement (overall, PPA positive percent agreement; NPA negative percent agreement), sensitivity, specificity, positive and negative predictive value, and coverage percentage point difference when subtracting the MCP vaccination record from a source designated as the reference standard] will compare household survey and administrative data. Data will be collected continuously over the entire study period (encompassing the 4-month pre-intervention period, 2-month intervention introduction period, and the 4-month post-intervention period)
3. Performance indicators for routine vaccination [Immunization coverage % for each individual vaccine in the routine schedule, % full immunization, % dropout (BCG to MCV1 and MCV2), equity of vaccination coverage (poverty, education), timely vaccination (cumulative days undervaccinated), breadth of protection, integrated health service delivery, missed opportunities for vaccination] will be constructed using household survey and administrative data. Data will be collected continuously over the entire study period (encompassing the 4-month pre-intervention period, 2-month intervention introduction period, and the 4-month post-intervention period)
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
1. Study clusters are immunisation microplan areas located in a selected block of Hardoi district, UP. Immunisation microplan areas have defined geographic boundaries and a population of approximately 1000 inhabitants; these catchment areas constitute the basis for immunisation session planning (Village Health and Nutrition Days). A sample of immunization microplanning areas will be identified in each block.
2. In selected areas, we will recruit all frontline workers (ANM, ASHA, AWW) involved in delivery of Village Health and Nutrition Days and associated immunization services.
3.In selected areas, we will recruit all families and primary caregivers (usually mothers) of children 0 to 23 months of age
Target number of participants
360 microplan clusters; 60 Assistant Nurse Midwives (health workers); 10,800 children 0 to 23 months
Participant exclusion criteria
1. The study will exclude villages of more than 4000 inhabitants.
2. There are no exclusion criteria for health workers
3. We will exclude caregivers of children not able to understand and speak Hindi or Urdu
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
OnionDev Technologies Pvt Ltd (Gram Vaani)
1st floor, Plot 346 Udyog Vihar II Rd Udyog Vihar II Sector 20
Department of Biotechnology , Ministry of Science and Technology
Funding Body Type
Funding Body Subtype
Bill and Melinda Gates Foundation
Bill & Melinda Gates Foundation, BMGF
Funding Body Type
private sector organisation
Funding Body Subtype
Trusts, charities, foundations (both publically funded and privately funded)
United States of America
Results and Publications
Publication and dissemination plan
1. Government partners (including the Ministry of Health and Family Welfare Immunization Division, the Uttar Pradesh state, district and block officials involved in delivery of immunisation and other child health services), and all members of the project advisory group will be briefed on study progress, findings and outcomes through written and verbal reports, periodically and at study end.
2. At study end, results will be returned to villages in plain language form to facilitate community discussion, and create evidence for action as a route to community empowerment. We will not present results specific to households or villages to ensure confidentiality.
3. As a means of sharing results with the scientific community and the general public, publication in high-quality scientific journals will be sought, as will opportunities for dissemination at scientific conferences. We will also employ other knowledge transfer strategies, such as workshops, policy briefs, and newspaper publications. We will publish findings accurately and completely, whether positive or negative.
4. Publications and research reports will be posted on the project website and made available to all interested parties upon request.
IPD sharing statement:
The current data sharing plans for this study are unknown and will be available at a later date
Intention to publish date
Participant level data
To be made available at a later date
Basic results (scientific)