We have growing evidence for the effectiveness and safety of our Wolbachia method and have set up projects in 11 countries.
We have released Wolbachia-carrying mosquitoes to reach more than 7.7 million people (as at June 2021). In areas where Wolbachia is self-sustaining at a high level, there has been a significant reduction in the number of dengue cases.
Results from our project sites show dengue incidence is significantly lower in Wolbachia-treated communities compared with untreated neighboring populations. Our most recent gold-standard trial in Yogyakarta showed a 77% reduction in dengue incidence and an 86% reduction in dengue hospitalisations in Wolbachia treated areas compared with untreated areas.
Safe and self-sustaining
Wolbachia is safe and its virus-blocking properties persist in mosquito populations many years after release.
Reduced disease burden
There have been large reductions in dengue incidence in communities where the World Mosquito Program's method has been applied.
Deployable at large scale
City-wide deployments are in progress in Medellín and Bello, Colombia and Rio de Janeiro and Niterói, Brazil.
Economic benefits forecast
The World Mosquito Program's method is predicted to be cost-saving in urban communities.
Results from a randomised controlled trial in Yogyakarta, Indonesia have been significant. Ongoing city-wide trials in Colombia and Brazil hope to release results in the coming months.
Independent experts predict that the World Mosquito Program's method will eliminate dengue transmissions for decades.
|Country & Sites||Implementation highlights||Area||People reached||Impact-to-date|
|Releases: 2013-14, 2018||2.2 km²||16,784||Dengue incidence in Wolbachia release area ↓ 61% following Wolbachia deployments.|
|Releases: 2015-17, 2020-present||289 km²||1,149,035||Cluster randomised trial showed a 77% reduction in dengue incidence and 86% reduction in dengue hospitalisations in Wolbachia-treated communities|
|Releases: 2011-17, 2019||299 km²||328,334||Dengue incidence ↓ 98% in Cairns and 95% in Townsville. Effective elimination of dengue as a public health concern.|
ColombiaMedellin, Bello, Itaguia and Cali
|Releases: 2015-present||138 km²||3,345,914||Dengue incidence ↓ 59% in Bello and 55% in Medellin. Case-control study ongoing throughout 2021.|
BrazilRio de Janeiro, Niteroi, Belo Horizonte and Campo Grande
|Releases: 2015 - present||265 km²||1,858,739||Dengue incidence ↓ 36% in Rio de Janeiro and 70% in Niteroi. Chikungunya incidence ↓ 54% and Zika incidence by 36% in Niteroi.|
Western PacificSuva, Nadi, Lautoka Fiji; Port Vila, Vanuatu; South Tarawa, Kiribati
|Releases: 2018-19||157 km²||436,786||Monitoring of impact ongoing.|
United Nations’ Sustainable Development Goals
In 2015, world leaders agreed to 17 Global Goals for Sustainable Development, to create a better world by 2030.
Our work supports many of the Sustainable Development Goals (SDGs), primarily SDG #3: Good health and well-being, in particular Target 3.3: Fight communicable diseases. This target calls for the end to epidemics of AIDS, tuberculosis, malaria and neglected tropical diseases and to combat hepatitis, water-borne diseases and other communicable diseases. Dengue, Zika and chikungunya are classified as neglected tropical diseases.
Our work also supports
Costly medical treatment for mosquito-borne diseases cause financial hardship for individuals and households, and time spent recuperating restricts their ability to earn a living or pursue education. Our work towards reducing these diseases will help to decrease poverty and increase economic prosperity.
The majority of our work is undertaken in high-density urban environments where Aedes aegypti thrive and where viruses can be easily transferred from one person to the next. Our approach is very cost effective and indeed is predicted to be cost-saving in most populous city locations where these diseases are currently entrenched and create sustained economic burden.
The global effort to control and eliminate mosquito-borne diseases is one of the largest public health initiatives ever undertaken. Our work towards mobilising financial resources from partners and funders, and working in partnership with government, non-government organisations and local communities, is helping to reduce mosquito-borne diseases.
Women and girls are particularly affected by mosquito-borne diseases such as dengue and Zika.
Our research shows that girls with dengue are at higher risk of severe symptoms and death than boys.
Women who are infected by Zika virus during pregnancy can bear children with serious health conditions, including microcephaly and Guillain-Barré syndrome, which can cause life-long disability.
The World Mosquito Program’s innovative method to prevent mosquito-borne diseases is, therefore, supporting women and girls to live healthier lives and prevent the risks associated with mosquito-borne diseases.