New type of bed net could cut malaria risk by up to half
Two new types of mosquito bed nets have been found to reduce cases of malaria by up to a half, raising hopes of combating the disease, which is becoming increasingly resistant to treatments and prevention efforts.
Nets treated with two types of insecticide rather than one were trialled between 2019 and 2022 in 17 African countries where malaria is endemic. Among the countries taking part was Nigeria, which accounts for more than a quarter of global deaths from the disease, which is transmitted by mosquitoes.
More than 600,000 people died
people were infected, according to the latest data from the World Health Organization. More than 90% of cases and deaths occurred in Africa.
in malaria prevention since the 1990s, contain the effective insecticide pyrethroid. However, mosquitoes have become increasingly resistant to it. .
During clinical trials when a net was coated with the insecticides pyriproxyfen or chlorfenapyr, alongside pyrethroid, malaria transmissions were reduced by between 20% and 50%.
malaria and we cannot rely on single interventions, but rather invest in a suite of tools,” said Michael Charles, chief executive of the RBM Partnership to End Malaria, a global platform for coordinated action against the disease. “The dual-insecticide nets are a shining example of one of these tools.”
The Global Fund to Fight Aids, Tuberculosis and Malaria, which funded the trials as part of the New Nets project, with global health organisation Unitaid, said the uptake of the piloted nets had been much faster and wider than initially anticipated. The organisation expects the introduction of the new product will continue at scale in the 17 states that took part in the pilot and will further expand to other countries.
The Global Fund is providing the new nets for under $3 (£2.40), which it says is comparable to the cost of older products. The organisation estimates that countries could save up to $30m (£24m) by adopting the new nets.
In January, the first malaria vaccine was introduced in Cameroon. Another 19 African countries are expected to introduce the RTS,S vaccine this year, including Burkina Faso, Sierra Leone and Liberia, which took part in the bed net trials.