Irish-born William Campell, China's Tu Youyou and Japan's Satoshi Omura won the 2015 Nobel Prize for physiology or medicine, it was announced on Monday.
The announcement was made by the Nobel Assembly at Sweden's Karolinska Institute, Xinhua news agency reported.
One half of the prize will be shared jointly by Campbell and Omura for "their discoveries concerning a novel therapy against infections caused by roundworm parasites".
The other half will go to Tu for "her discoveries concerning a novel therapy against malaria".
