Mosquitoes Being Fed a Blood Meal (IMAGE) Walter and Eliza Hall Institute Caption Eliminating malaria in the Asia-Pacific could prove more challenging than previously thought, with new research showing that most childhood malaria infections in endemic areas are the result of relapsed, not new, infections. An international study found four out of five children in Papua New Guinea (PNG) aged five to 10 years old were susceptible to recurring infection with the malaria parasite Plasmodium vivax, which can 'hide' undetected in the liver. The discovery has significant repercussions for the country's -- and region's -- malaria control program. Credit Mayeta Clark/Walter and Eliza Hall Institute Usage Restrictions Must be credited to Mayeta Clark/Walter and Eliza Hall Institute Only to be used in connection with this press release. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.