The Sri Lankan government is set to begin trialling a special bacteria as part of a programme to eradicate the dengue virus, a Health Ministry official said on 12th December.
Deputy Director General of the Health Ministry Paba Palihawadana said that a type of bacteria called "Wolbachia" will be released in 25 local townships in Colombo starting February 2020, reports Xinhua news agency. Households will be provided with mosquito eggs and a food capsule which must be sealed in water for two weeks, after which the mature mosquitoes will be released into the environment to spread the bacteria. According to the World Mosquito Program, "Wolbachia" decreases the ability of mosquitoes to transmit viruses between people and is self-sustaining at high levels.

It competes with mosquito-borne viruses like dengue, chikungunya, yellow fever and Zika, helping to reduce transmission of the viruses. Australia was the first country in the world to use "Wolbachia" to control mosquito-borne diseases and no transmissions have been recorded in eight years. In 2017, Sri Lanka suffered a severe outbreak of dengue with 186,101 reported cases and over 320 deaths. The unprecedented outbreak was met with significant government intervention to eradicate breeding grounds and educate citizens. According to the Epidemiology Unit of the Health Ministry, the country recorded 86,484 cases of dengue in 2019.