In tests, male Anopheles coluzzii responded to an object in their field of vision differently depending on the sound.
The global community must act on the lessons of the pandemic or risk repeating past mistakes.
Rwanda health ministry did not give exact numbers but said there were few cases.
With many consumers becoming more cautious, many are opting to buy fruits and vegetables from specialist shop.
WHO declared the recent outbreak of the disease a public health emergency of international concern after the new variant was identified.
