To eliminate vector-borne diseases through the development of high-quality, long-lasting vector control products. By conducting rigorous evaluations, developing new bioassays, contributing to policy documents and building capacity in entomology, we help accelerate the introduction of new products to the market.
Internationally recognised, the Vector Control Product Testing Unit evaluates all types of vector control tools, including insecticide-treated nets, indoor residual sprays, spatial emanators, space sprays, larvicides, traps, lure-and-kill systems, and more — producing evidence used to shape global vector control policy.
To serve the community by delivering excellent service, conducting high-quality research in vector control product testing, and training the next generation of vector control experts.
The Vector Control Product Testing Unit (VCPTU) is a specialised research unit within the Environmental Health and Ecological Sciences Department of the Ifakara Health Institute (IHI), located at its Bagamoyo Branch on the Tanzanian coast.
Established as an internationally recognised site, the VCPTU conducts high-quality, independent evaluations of novel and existing vector control products for private industry, product development partnerships (PDPs), and regulatory bodies — including the WHO Prequalification Programme.
All studies are conducted under the principles of Good Laboratory Practice (GLP), accredited by the South African National Accreditation System (SANAS G0033). Our work spans from research and development (R&D) through large-scale community trials, following rigorous methodology.
Colony Maintenance
Cone Bioassay
Tunnel Test
We evaluate IRS, ITNs, larvicides, space sprays, spatial emanators, personal protection products, and mosquito lures using internationally standardised methods. We also develop new testing methods and provide data analysis and report writing.
Laboratory, semi-field and community evaluation of ITNs across all insecticide chemistries, from WHO bioassays through experimental hut trials and field durability studies.
Laboratory assessments and experimental hut evaluations of IRS formulations.
Laboratory, free-flying and semi-field evaluation of spatial emanators, personal protection products, and novel repellent devices.
Laboratory, semi-field, and controlled field evaluations of biological and chemical larvicides.
Semi-field and field evaluation of lure and kill devices for outdoor vector control.
The BSL-3 Malaria Transmission Laboratory supports clinical trials to evaluate transmission-blocking interventions — vaccines, antimalarial drugs, insecticides, and endectocides.
Semi-field evaluation of space spray formulations for indoor and outdoor vector control.
VCPTU offers end-to-end evaluation across all major vector control product classes, from laboratory screening through large-scale field trials.
| Product Class | Laboratory | Experimental Hut | Semi-Field Bioassays |
Community Entomological Trial |
Clinical Trials |
BSL-3 Biosafety |
|---|---|---|---|---|---|---|
| Insecticide-Treated Nets (ITN) | ✓ | ✓ | ✓ | ✓ | — | — |
| Indoor Residual Sprays (IRS) | ✓ | ✓ | ✓ | ✓ | — | — |
| Spatial Emanators | ✓ | ✓ | ✓ | ✓ | — | — |
| Larvicides | ✓ | — | ✓ | — | — | — |
| Mosquito Lures | — | — | ✓ | ✓ | — | — |
| Space Sprays | ✓ | ✓ | ✓ | — | — | — |
| Malaria Transmission Blocking | ✓ | — | — | — | ✓ | ✓ |
✓ = VCPTU has full capacity · — = not applicable for this product class
In addition to standard WHO evaluation guidelines, VCPTU has developed and validated in-house methodologies that address key gaps in insecticide-treated net bioefficacy assessment — improving throughput, reducing variability, and enabling accurate evaluation of next-generation products. VCPTU is also unique in operating all four standard experimental hut designs — Ifakara, Rapley, East African, and West African — at a single field site.
A semi-field whole-net bioassay that evaluates complete ITNs under conditions closely simulating real sleeping environments — using a human host and free-flying mosquitoes over a natural 12-hour nocturnal exposure. Developed as a higher-throughput alternative to experimental hut trials.
A novel semi-field bioassay developed at VCPTU for evaluating IRS pro-insecticides such as chlorfenapyr. Because chlorfenapyr requires metabolic activation by free-flying, host-seeking mosquitoes, standard WHO cone and cylinder tests — which confine and restrict movement — severely underestimate its efficacy. The MEH provides an ecologically realistic, controlled exposure environment by housing miniature huts with treated wall panels inside the IACT tunnel, with a rabbit as host bait for overnight free-flying exposure.
A novel approach to ITN regeneration time (RT) assessment that substantially reduces daily heterogeneity caused by mosquito batch variability. In the conventional WHO longitudinal method, RT is measured across multiple testing days with different mosquito cohorts — introducing inter-batch noise. The CSM pre-stages all regeneration time points, then tests the complete series in a single day using one mosquito batch.
Each hut measures 3.25 × 3.5 × 2 m with brick walls lined with mud and a corrugated iron roof overlaid with thatch; the ceiling is corrugated iron lined with foil. Entry is via eave openings (300 × 10 cm) on three sides that funnel to a 300 × 5 cm slit — a total entry area of 4,500 cm² — directing mosquitoes inward. Exit is through four window exit traps (240 cm² total); re-entry is not possible. One volunteer sleeper per hut. Ifakara huts catch on average three times more mosquitoes than East African or West African hut designs (Govella et al., PLoS ONE 2010). Used primarily for ITN evaluations and also deployed for spatial emanator efficacy studies.
First described by Rapley (1961) and adapted for East African conditions. Each hut measures 2.5 × 2.5 × 2 m with concrete-block walls and a corrugated iron roof overlaid with thatch; the ceiling is corrugated iron lined with plastic sheeting. Entry is via eave openings (200 × 15 cm) on four sides funnelling to a 200 × 3 cm slit — total entry area 2,400 cm². Exit is through window exit traps (320 cm² total); re-entry is not possible. One volunteer sleeper per hut. Well-suited for evaluating insecticide-treated nets (ITNs), Indoor Residual Spray (IRS) formulations, and spatial emanators. Operated at the Lupiro (Ulanga) field site.
East African huts (3 × 3 × 2 m) have brick walls lined with mud and a corrugated iron roof; the ceiling is wood lined with hessian or plastic sheeting. Entry is via eave openings (140 × 20 cm) on each wall funnelling to a 20 × 5 cm slit on two sides (total entry area 400 cm²). Exit is through both a verandah trap and window exit traps (880 cm² total); re-entry is not possible — a design in use in Tanzania since 1963 (Smith, 1965). West African huts (2.5 × 1.75 × 2 m) have concrete-block walls and a corrugated iron roof lined with plastic sheeting. Entry is via four slits (1 × 60 cm; two at the front, one on each side; total 240 cm²). Exit is through a verandah (225 cm²); notably, re-entry is possible, distinguishing this design from all others.
A novel ITN bioassay system developed and externally validated. The IACT uses a net-covered tunnel under ambient conditions, allowing examination of the interaction between ITN fabric and chemistry using free-flying mosquitoes.
Large screened enclosures at the Bagamoyo site that simulate outdoor peridomestic environments. Used for controlled evaluation of spatial emanators, traps/lure-and-kill, and other outdoor vector control tools against colonised and wild mosquitoes under ambient conditions.
Fully equipped molecular laboratory for species identification (PCR), insecticide resistance mechanism profiling (kdr, ace-1), Plasmodium detection by ELISA and PCR.
Produces over 5 million disease-free mosquitoes per year across 10 colony strains. Species maintained: An. gambiae s.s. (Kisumu, Ifakara — susceptible; Muleba Kis — pyrethroid resistant), An. arabiensis (Dongola — susceptible; Kingani — pyrethroid resistant), An. funestus (FUMOZ — pyrethroid resistant), Aedes aegypti (Kingani — susceptible; Kinondoni — pyrethroid resistant), and Culex quinquefasciatus (Bagamoyo — pyrethroid resistant).
Lupiro village (Ulanga District) hosts 60 experimental huts (30 Ifakara, 18 Rapley, 4 East African, and 8 West African style) — alongside a dedicated field laboratory, operating in high An. arabiensis density all year round.
| Species | Strain | Origin | Established | Pyrethroid | Carbamates | Organophosphates | Chlorfenapyr |
|---|---|---|---|---|---|---|---|
| Anopheles gambiae s.s. | Kisumu | KEMRI Kenya | 2021 | S | S | S | S |
| Ifakara | Kilombero field collections | 1996 | S | S | S | S | |
| Muleba Kis | KCMC Moshi | 2025 | R | S | S | S | |
| Anopheles arabiensis | Dongola | Transmission Zero Tanzania | 2026 | S | S | S | S |
| Kingani | S. Tanzania field collections | 2011 | R (m) | S | S | S | |
| Lupiro (field) | F0 larval collections, Lupiro | 2026 | R (m) | S | S | S | |
| Anopheles funestus | FUMOZ | NICD South Africa | 2021 | R (m) | S | S | S |
| Aedes aegypti | Kingani | Bagamoyo field collections | 2015 | S | S | S | S |
| Kinondoni | Dar es Salaam field collections | 2023 | R (m) | S | R | S | |
| Culex quinquefasciatus | Bagamoyo | Bagamoyo field collections | 2019 | R (m) | S | S | S |
S = susceptible · R = resistant · R (m) = metabolic resistance
VCPTU team publish an average of 10 peer-reviewed articles per year in leading journals.
View all VCPTU publications on PubMed or via the PI's ORCID profile
A visual tour of our facilities, field sites, and team across Bagamoyo and Lupiro.
VCPTU is powered by over 50 scientists, field technicians, insectary staff, data managers, and support personnel committed to delivering the highest-quality vector control evaluations.
Medical entomologists, research scientists and officers, epidemiologists, biostatisticians, and data analysts designing and executing product evaluations
Experienced hut sleepers, mosquito collectors, and field supervisors operating across Lupiro and Bagamoyo sites
Insectary technicians maintaining mosquito colonies and molecular biologists running PCR, ELISA, and resistance assays
Biostatisticians and data managers ensuring GLP-compliant data capture, analysis, and reporting
A multidisciplinary team of scientists, field specialists, and support staff dedicated to generating rigorous evidence for malaria vector control.

Vector control scientist with 20+ years of experience. Based in Tanzania, she leads the Vector Control Product Testing Unit at the Ifakara Health Institute, generating evidence to inform global policy and advance malaria and dengue control; building capacity for sustained control through supervision of over 50 postgraduate students.
smoore@ihi.or.tz PubMed
Leads evaluation studies on ITNs, IRS, and mosquito repellents. Spearheaded VCPTU's GLP accreditation process (achieved 2021), now serving as GLP Study Director. Co-author on research covering long-lasting insecticidal net bioefficacy and vector control training.
PubMed ORCID
Manages day-to-day testing facility operations, GLP compliance, and experimental infrastructure across Bagamoyo and Lupiro. Co-author on 60+ publications covering field experimental hut trials, semi-field evaluations, and insecticide resistance.
PubMed
Results-driven project manager with 10+ years of experience in planning, execution, coordination and administration of multi-country research projects. Oversees project operations, stakeholder coordination, procurement, and compliance with documentation and regulatory standards at VCPTU.

Leads evaluation studies on ITNs, IRS, and mosquito repellents. Spearheaded VCPTU's GLP accreditation process (achieved 2021), now serving as GLP Study Director.
PubMed ORCID
Epidemiologist and entomologist leading ITN and house-modification trials. Interests in improving testing modalities, study design, data analysis, and training.
PubMed ORCID
Over eight years at the Ifakara Health Institute conducting medical entomology research, encompassing spatial repellent evaluation, experimental hut trials, insecticide resistance bioassays, vector surveillance, and the evaluation of insecticidal products.
PubMed ORCID
Laboratory evaluation of insecticide-treated nets including tunnel assays and WHO cone bioassays. Co-author on research into volatile pyrethroid spatial emanators and 3D video tracking of mosquito behaviour.
PubMed
Specializes in the testing and evaluation of vector control products, including Insecticide-Treated Nets (ITNs) and Indoor Residual Spraying (IRS), in compliance with Good Laboratory Practice (GLP) standards.
PubMed
Medical entomologist specialising in Anopheles mosquito control. Publications span next-generation ITN effectiveness, mosquito mating behaviour, biolarvicide evaluation, and ITN bioefficacy testing.
PubMed ORCID
16 years of experience in malaria research and medical entomology. Ensures GLP compliance across all VCPTU facilities and leads bioefficacy evaluation of next-generation ITNs including PBO and chlorfenapyr nets.
PubMed
Laboratory evaluation specialist. Expertise in WHO cone bioassay methodology, insecticide resistance characterisation, and standardisation of bioefficacy testing protocols for pyrethroid and PBO-synergised nets.
PubMed
Laboratory evaluation of vector control products including WHO cone bioassays and tunnel assays at the VCPTU Bagamoyo site.

Operational and logistical support for field trials and laboratory activities at the Bagamoyo testing site.

PhD student at the University of Basel and research scientist with 10+ years of experience in mosquito vector control. Study coordinator for malaria and arboviral vector control projects.
PubMed ORCID
Evaluates efficiency of vector control products across multiple projects. Drafts study protocols and reports, coordinates procurement, and resolves field-based complications. Published on Anopheles funestus survival and ITN hut trials.
PubMed
Medical entomologist specialising in Anopheles mosquito control. Publications span next-generation ITN effectiveness, mosquito mating behaviour, biolarvicide evaluation, and ITN bioefficacy testing.
PubMed ORCID
Specialises in the testing and evaluation of innovative vector control products, including larvicides, ITNs, and outdoor traps targeting Anopheles and Aedes mosquitoes under GLP standards.
PubMed ORCID
Operational and logistical support for field trials and laboratory activities at the Bagamoyo testing site.

Specializes in the testing and evaluation of vector control products, including Insecticide-Treated Nets (ITNs) and Indoor Residual Spraying (IRS), in compliance with Good Laboratory Practice (GLP) standards.
PubMed
Medical entomologist co-leading the spatial emanator evaluation portfolio. Contributed to the WHO prequalification of SC Johnson Mosquito Shield and helped shape Module 5 of the WHO interim guidance for spatial emanator prequalification.
Publications ORCID
A Public Health Research Scientist contributing to the development and evaluation of next-generation vector control technologies. His research interests focus on closing gaps in protection against outdoor and residual transmission. Through laboratory, semi-field, and field research, he aims to generate evidence that supports the development of practical, scalable, and sustainable vector control solutions for endemic communities across Africa.
PubMed
Entomologist and Research Fellow whose research focuses on novel and cryptic Anopheles vectors, outdoor transmission dynamics, larval source management, and insecticide efficacy.
PubMed
Specialises in the testing and evaluation of innovative vector control products, including larvicides, ITNs, and outdoor traps targeting Anopheles and Aedes mosquitoes under GLP standards.
PubMed ORCID
Entomological product testing and semi-field system evaluations of vector control interventions under simulated field conditions.
PubMed ORCID
Conducts research on malaria transmission biology, with a focus on evaluating transmission-blocking interventions in mosquito vectors. Experienced in mosquito infection assays, vector competence studies, and the assessment of novel transmission-blocking tools, including insecticide-based interventions. Co-author on research focused on malaria transmission reduction and vector control innovations.
PubMed ORCID
Manages day-to-day testing facility operations and GLP compliance, and leads space spray product evaluations across the Bagamoyo and Lupiro sites.
PubMed
Space spray evaluations and vector control product testing. Expertise in indoor residual spraying trials and entomological assessment of adult mosquito control interventions.
PubMed
Operational and logistical support for field trials and laboratory activities at the Bagamoyo testing site.

Biostatistician supporting multi-site trial design, data management, and formal analysis. Publications spanning malaria vector control, vaccine efficacy, and epidemiology.
PubMed ORCID
Epidemiologist and entomologist leading ITN and house-modification trials. Interests in improving testing modalities, study design, data analysis, and training.
PubMed ORCID
Over eight years at the Ifakara Health Institute conducting medical entomology research, encompassing spatial repellent evaluation, experimental hut trials, insecticide resistance bioassays, vector surveillance, and the evaluation of insecticidal products.
PubMed ORCID
Data scientist supporting study conceptualisation, data visualisation, and analysis of vector control trials. Contributed to studies on spatial emanators, insecticide-treated eave nets, and semi-field evaluations.
PubMed
Manages data systems and quality across VCPTU studies. Responsible for GLP-compliant data capture, database maintenance, and supporting analysis for vector control product evaluations.
PubMedSupports data capture, management, and quality assurance for VCPTU vector control studies.

Software developer and data manager at IHI since 2012. Specialises in database design and management, web and mobile application development, and data analysis in Stata and R.

Manages day-to-day testing facility operations, GLP compliance, and experimental infrastructure across Bagamoyo and Lupiro.
PubMed
16 years of experience in malaria research and medical entomology. Ensures GLP compliance across all VCPTU facilities and leads bioefficacy evaluation of next-generation ITNs including PBO and chlorfenapyr nets.
PubMed
Social scientist (BA Sociology, UDSM; MSc Public Health, MUHAS) whose master’s research examined drivers of high malaria prevalence among school-aged children in south-eastern Tanzania, including outdoor activity and bed-net use patterns. At VCPTU she leads stakeholder engagement across government, research partners, communities, donors, and product developers to promote intervention acceptance, evidence uptake into policy, and the sustainability of research outcomes. Her interests centre on community perceptions and barriers to malaria-control uptake, alongside project monitoring and evaluation.
PubMed ORCID
Unit administration, procurement coordination, and visitor management. Six years supporting VCPTU day-to-day operations.
rkidyala@ihi.or.tz
Senior Administrator with over eight years of experience in research administration and quality management systems at the Vector Control Product Testing Unit (VCPTU). She has expertise in Good Laboratory Practice (GLP) documentation management, project coordination, compliance, and administrative operations.

Administrator for the Lupiro experimental hut field site since 2023, supporting VCPTU field operations in Ifakara. He coordinates field procurement, supplies, and logistics; manages project documentation and Good Clinical Practice (GCP) compliance for SOPs and data logs; oversees ethical approvals for field studies; and ensures timely volunteer payments.
ymataka@ihi.or.tzWhether you are an industry client seeking product evaluation, a regulatory body, an academic collaborator, or a student interested in joining our team — we welcome your enquiry.
Vector Control Product Testing Unit
Ifakara Health Institute — Bagamoyo Branch
P.O. Box 74, Bagamoyo, Tanzania
+255 684 630 037
| ITNs (R&D) | Dr Olukayode Odufuwa | oodufuwa@ihi.or.tz |
| ITNs (Prequalification) | Prof Sarah Moore | smoore@ihi.or.tz |
| ITN Durability | Emmanuel Mbuba | embuba@ihi.or.tz |
| IRS | Frank Tenywa | ftenywa@ihi.or.tz |
| Larvicides | Dr Jennifer Stevenson | jstevenson@ihi.or.tz |
| Spatial Repellents | Dr Johnson Kyeba Swai | skyeba@ihi.or.tz |
| Space Sprays | Jason Moore | jmoore@ihi.or.tz |
| Transmission Blocking | Dr Mgeni Tambwe | mmohammed@ihi.or.tz |