Application of telehealth for comprehensive Creutzfeldt-Jakob disease surveillance in the United Kingdom.

Creutzfeldt-Jakob disease (CJD) is a fatal human prion disease. Surveillance systems operate globally with the goals of accurate in-life case ascertainment, appropriate public health interventions to minimise secondary transmission, and monitoring trends in disease epidemiology. The UK experienced the highest incidence of variant CJD (vCJD) in the world following widespread population exposure to bovine spongiform encephalopathy (BSE). 178 cases of vCJD have been identified in the UK by the National CJD Research & Surveillance Unit (NCJDRSU), including three cases of secondary transmission via blood transfusion. The NCJDRSU performs high-fidelity surveillance, assessing all cases of suspected CJD referred to the unit. COVID-19 has caused widespread disruption to healthcare and poses a threat to services. The NCJDRSU converted to telehealth-based surveillance in March 2020. We report the results of the application of telehealth for comprehensive CJD surveillance during the first four months of the pandemic. 59 cases were assessed for suspected CJD. In 52 cases the relatives were interviewed for an informant history, by video conference or telephone call. 34 patients underwent video examination; 1 case was examined in-person. MRI images were assessed in all cases and 46 underwent CSF testing. Feedback was obtained from interviewees and the NCJDRSU team on their experiences. 50 cases were diagnosed with sporadic CJD; 5 received an alternative diagnosis, and the remaining 4 remained unresolved, with further investigations underway. Telehealth significantly reduced time taken to assessment compared to in-person assessments in 2019. Telehealth is an effective way to provide comprehensive CJD surveillance at a national level.

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