Rhinovirus

The goal of this study is to determine the burden of Rhinoviruses (RVs) as a cause of acute, severe, respiratory illnesses leading to hospitalization. A community cohort of 120 children between 12 and 36 months of age will be enrolled in the first year of the study and followed (when well and sick) for 36 months to identify the circulating RVs and provide samples to establish a host nasal transcriptome differentiating clinical from subclinical RV infections. A hospitalized cohort of 450 infants and children will be enrolled during years 1 through 3 of the study and followed for the duration of their hospitalization to investigate the findings of the community cohort. An additional 100 healthy children aged 5-17 years will be enrolled for age-match comparison with the older hospitalized cohort.

RACSMEI addresses the high burden of infectious diseases in low- and middle-income countries, including Cambodia, where limited surveillance and laboratory capacity often obscure etiologies and transmission dynamics. This knowledge gap hinders the design of effective prevention and control strategies. RACSMEI will improve understanding across multiple pathogens using a multidisciplinary One Health approach. We will answer key questions on burden, ecology, transmission and population immune status to inform targeted and culturally appropriate interventions. The project combines a nationally representative One Health survey, social-science methods, and multiplex, diverse diagnostics to efficiently test for 57 priority pathogens, including zoonotic and vector-borne agents, vaccine-preventable and elimination-targeted diseases, enteric, respiratory, and environmentally transmitted pathogens and selected neglected tropical diseases and parasites relevant to Cambodia. Mathematical modelling will reconstruct and forecast transmission dynamics and assess the potential impact of future public-health strategies. By integrating intersectoral data and innovative methods, RACSMEI will generate actionable evidence for public-health authorities, support precision One Health interventions, and help reduce disease burden in affected communities. The project also aims to ensure the transferability of methods and insights to other countries facing similar challenges.

The Metrix Respiratory Panel Test will be evaluated for use in Non-Laboratory settings in a home testing environment utilizing the clinical study design described herein. The study will take place in simulated home environments which will be set up within or near active clinical settings (e.g., urgent care facilities). This will be a prospective study conducted at three or more investigational sites located within the United States for the clinical validation of the Metrix Respiratory Panel Test for the detection of SARS-CoV-2, Influenza A, Influenza B, Respiratory syncytial virus, and Rhinovirus in anterior nares (AN) swab samples. Additional sites may be added to the study in order to meet minimum subject/sample enrollment requirements and geographic prevalence of respiratory virus infections. Comparator testing will be performed to determine the infection status of each sample for comparison to results generated by the candidate test. The primary comparator for the study will be an FDA-cleared assay for the detection of SARS-CoV-2, Influenza A, Influenza B, Respiratory Syncytial Virus, and Rhinovirus.