Vectron T500 (Broflanilide 50WP) for IRS in Tanzania Tanzania

  • STATUS
    Recruiting
  • End date
    Dec 31, 2022
  • participants needed
    12500
  • sponsor
    London School of Hygiene and Tropical Medicine
Updated on 17 December 2021
Accepts healthy volunteers

Summary

Malaria is a major public health problem in Africa. An important way to control the disease is by Indoor Residual Spraying of insecticide in houses. Insecticide resistance has become a major problem. This trial will evaluate a novel insecticide against those insecticide resistant mosquito vectors in Tanzania E Africa.

Description

Background: Indoor residual spraying (IRS) is one of the major methods of malaria vector control across sub-Saharan Africa, responsible for reducing malaria incidence by 10% since 2000. However, effective vector control is increasingly threatened by the rapid spread of insecticide resistance. Consequently, there have been investments in the development of new insecticides for IRS that possess novel modes of action with long residual activity, low mammalian and environmental toxicity and minimal cross-resistance. VECTRONTM T500, a new IRS insecticide containing the active ingredient broflanilide 50% WP, has been shown to be efficacious against both pyrethroid-susceptible and -resistant vector strains on mud and concrete substrates in phase II experimental hut trials in Tanzania.

Method: A two-arm non-inferiority cluster randomized controlled trial will be conducted in Muheza District, Tanga Region, Tanzania. VECTRONTM T500 will be compared to the IRS formulation Fludora® Fusion (active ingredients: clothianidin 50% WP + deltamethrin 6.25% WP). The predominant malaria vectors in the study area are pyrethroid-resistant Anopheles gambiae s.s., An. arabiensis and An. funestus s.s. Sixteen selected clusters of 75-200 households in each cluster will be pair-matched on baseline vector densities and allocated to reference and intervention arms. Consenting households in the intervention arm will be sprayed with VECTRONTM T500 and those in the reference arm will receive Fludora® Fusion. Monthly CDC light traps will collect mosquitoes to determine vector density, indoor biting, sporozoite and entomological inoculation rates (EIR). Phenotypic resistance to IRS active ingredients will be assessed using CDC bottle bioassays. Molecular and metabolic resistance mechanisms will be characterised among Anopheles field populations from both trial arms. Residual efficacy of both brands of insecticide will be monitored for 12 months post-spraying. A semi-structured questionnaire and focus group discussions will explore social and cultural factors that influence acceptability, perceived adverse effects and benefits of IRS.

Discussion: This protocol describes a phase III non-inferiority evaluation of a novel IRS product to reduce the density and EIR of pyrethroid-resistant Anopheles vectors. If VECTRONTM T500 proves non-inferior to Fludora® Fusion, it may be considered as an additional vector control product for malaria prevention and insecticide resistance management schemes.

Details
Condition Malaria,Falciparum
Treatment IRS insecticide: Vectron T500
Clinical Study IdentifierNCT05150808
SponsorLondon School of Hygiene and Tropical Medicine
Last Modified on17 December 2021

Eligibility

Yes No Not Sure

Inclusion Criteria

All households who consent to IRS malaria control

Exclusion Criteria

none
Clear my responses

How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact

site

0/250

Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider

Loading...

Browse trials for

Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 

 • 

Private

Reply by • Private
Loading...

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.
Loading...

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note