Bayer and IVCC introduce deltamethrin spray for malaria control

The World Health Organization Pesticide Evaluation Scheme (WHOPES) has issued a recommendation for a new polymer-enhanced, long-lasting Indoor Residual Spray for malaria vector control. This deltamethrin based spray was jointly developed by Bayer CropScience and IVCC (the Innovative Vector Control Consortium). It represents a viable cost-effective alternative to DDT for malaria control programs. Market introduction across Sub-Saharan Africa and other malaria endemic areas is expected to occur during 2014 once relevant national regulatory approvals are in place.

Since 2007, Bayer CropScience has been working with its partners in IVCC to develop longer lasting indoor residual spray formulations and new active ingredients to manage insect resistance in malaria vector control. The new polymer-enhanced formulation of deltamethrin offers a residual effectiveness of six months. The World Health Organization (WHO) has recognized this unique formulation as having a longer residual lifespan than any other pyrethroid insecticide formulation.

"The success of the international community's goal of eradicating malaria globally depends ultimately on new ideas and innovation," said Dr. David Nicholson, Head of Research & Development at Bayer CropScience. "Our long-lasting indoor-residual spray is an effective malaria intervention. As a global innovation and market leader in vector control, we will continue to work closely with IVCC to foster the introduction of new tools for public health."

"We are delighted to have met this important research milestone in our collaboration with Bayer CropScience", said Nick Hamon, CEO of IVCC. "This collaborative achievement illustrates the progress which has been made on the original objectives to deliver effective and affordable vector control interventions. I look forward to further successful outcomes from the IVCC partnership with Bayer CropScience."

There are many countries in Sub-Saharan Africa where the transmission period for malaria can be longer than six months. In these situations, when indoor residual spraying is regarded as an appropriate intervention, a product with longer-lasting efficacy can be very important, reducing the frequency of spraying required and saving considerable costs for malaria control programs.

All insecticide sprays for malaria control are required to be evaluated and recommended by the WHO for effectiveness and safety. Until now the only product formally recognized to have residual effectiveness exceeding six months has been DDT. However, as a Persistent Organic Pollutant (POP), the production and use of DDT is strictly restricted.