Zhao Y, et al. - Given the significant impact of asymptomatic malaria on transmission dynamics, researchers sought to assess the prevalence, dynamics and risk factors of asymptomatic malaria infections via performing cross-sectional surveys in 3 seasons (March and April, July and November) and 2 sites [villages and internally displaced people (IDP) camps] in 2015. They collected a total of 1680 finger-prick blood samples and used them for parasite detection by microscopy and nested RT-PCR (nRT-PCR). Findings revealed a high prevalence of sub-microscopic Plasmodium infections in the border human populations from IDP camps and surrounding villages. Males and school children (≤ 15 years) were identified as the high-risk populations. Vector-based interventions, including bed net and indoor residual spray, were found to have significant impacts on asymptomatic Plasmodium infections. Furthermore, individuals living in poorly constructed households or farther away from clinics showed a higher tendency to acquire asymptomatic infections.