Advancing Spatial Repellents for Vector-Borne Disease Control

Unitaid Logo

Funded by Unitaid, the project is evaluating a novel vector control product, ENVELOPE, with the potential to contribute to dramatic gains in malaria and Aedes-borne virus control in a variety of development contexts. The goal of the project is to generate evidence on a SR product as an efficacious and cost-effective vector control tool as a complement to existing vector control strategies. The evidence is meant to provide data on feasibility, impact and safety that can be used to endorse a policy recommendation by WHO for SRs as a complementary tool for vector control. This will be achieved through two randomized-cluster trials and one operational study. Kenya is one of the sites for a randomized-cluster study where researchers will evaluate protection against new human malaria infections to address residual transmission.

Research Focus

  • Epidemiology

    At the EIGH, our researchers use epidemiology to understand the distribution and determinants of the health and disease conditions in specific populations, and to identify risk factors for certain diseases. This allows them to develop, implement, and measure the impact of targeted, preventative healthcare methods. 

  • Infectious Diseases

    At the EIGH, our researchers work to combat a number of various illnesses, including infectious diseases caused by organisms like bacteria, viruses, fungi, and parasites. These diseases can also be spread from one person to another and may be transmitted from animals to humans. 

  • Vector-borne Diseases

    Vector-borne disease research is a historic strength of the EIGH. Our researchers study multiple parts of the vector-borne disease lifecycle, such as how the parasites, viruses, and bacteria cause these kinds of diseases, how the vectors spread these diseases, and how to improve prevention methods in tropical and subtropical areas, which have the highest burden of vector-borne illnesses. 

Who’s Involved

EIGH Faculty


  • Catholic Relief Services
  • National Dengue Control Unit, Ministry of Health, Sri Lanka
  • Johns Hopkins University
  • Kenya Medical Research Institute
  • Centers for Disease Control and Prevention
  • fhi360
  • SC Johnson


  • Center for Research Computing

Additional Information


Grieco lab website

Other Research in Kenya