Overview

• A UCSF systematic review spanning more than 25 years and about 1.7 million mosquitoes found spatial emanators prevent roughly 56% of expected bites.
• WHO issued an August 13 recommendation recognizing spatial emanators as the first new vector-control product class in over 40 years, opening eligibility for major donor subsidies.
• The WHO pathway specifically names Mosquito Shield and Guardian for subsidized use in malaria-endemic countries, reflecting near-term procurement options.
• Devices release volatile chemicals similar to those used on treated nets, work day and night without electricity, and are suited to remote settings across Africa, South America, and Southeast Asia.
• Three products are in production: BiteBarrier (about 21 days, first sold in the U.S.), Mosquito Shield (around 30 days), and Guardian (up to one year); the study was published August 26 in eBioMedicine with NIAID funding, as NIH is not taking new applications on this topic.