Research from spatial repellent trial in Syria published in BMC Medicine journal

Research from a trial evaluating the efficacy of Mosquito Shield™ spatial repellent in reducing cases of cutaneous leishmaniasis in displacement camps in North-East Syria was published in BMC Medicine journal on 3 July.

The results are significant and provide the first demonstrable impact of spatial repellents on cutaneous leishmaniasis (CL) transmission, particularly in fragile, humanitarian settings. The findings showed:

▪️ 48% reduction in CL incidence
▪️ 78% reduction in female sandfly density
▪️ High community acceptance and usability

Link to the paper 👉 https://rdcu.be/euMrq

Since the study (April 2021 to 2022) a newer version has been developed by SC Johnson called Guardian™ which has proven to be effective in reducing multiple vectors such as mosquitoes and flies for up to a year.

Poor sanitation, extreme heat, inadequate health services, ongoing population movement and reduced humanitarian aid mean the risk of leishmaniasis outbreaks has never been higher.

A large-scale campaign in collaboration with Grand Challenges Canada and SC Johnson aimed to distribute 100,000 Guardian spatial repellents by the end of August 2025, focussing on protecting children, pregnant women, elderly people, and those with chronic illnesses. So far, 99,115 Guardian spatial repellents have been delivered reaching 16,824 households in Internally Displaced Person camps in North-West Syria, where thousands of families face threats from various disease transmitting vectors, including sandflies.

“People are happy with Guardian, as it’s safe for their health. Guardian works silently without electricity, is non-toxic, and eco-friendly – perfect for fragile humanitarian settings. Many residents call it a “Guard” that protects their homes and gives peace of mind. Despite all the challenges, our team brings care, trust and protection. In areas with limited health services and heavy insect presence, Guardian helps reduce insect-borne diseases and improve public health.” – MENTOR spokesperson.

This work was supported by Grand Challenges Canada. Grand Challenges Canada is funded by the Government of Canada and the Government of the United Kingdom of Great Britain and Northern Ireland acting through the Foreign, Commonwealth & Development Office.