One Health security lessons from a year-long webinar series on international COVID-19 response.

Following the principles outlined by the Global Outbreak Alert and Response Network, the Federal Bureau of Investigation's International Biosecurity and Prevention Forum, the European Commission's Joint Research Centre, and the Middlebury Institute of International Studies' James Martin Center for Nonproliferation Studies cohosted a webinar series from April 2020 to January 2021 on COVID-19 management across Africa, Europe, and North America. We provide here an overview of the webinar series and discuss how lessons learned during the COVID-19 pandemic and debated during the webinars can be used to bridge One Health with biological threat-driven health security. This report can be used to inform recommendations for future One Health security approaches to strengthen global capacity and multidisciplinary cooperation.

PIMS or not? Alternative diagnoses in the febrile child during the COVID-19 pandemic

BackgroundThe majority of children and young people affected by COVID-19 have remained asymptomatic or suffered mild illnesses. However throughout the pandemic patients with a novel rare but severe disease phenotype, Paediatric Inflammatory Multisystem Syndrome Temporally associated with SARS-CoV-2 (PIMS-TS)1 continue to need hospital admission. The importance of considering the wider differential such as malignancies should be highlighted.ObjectivesTo establish the range of diagnoses of children admitted to a tertiary London children’s hospital presenting with a history of fever and high CRP, in whom PIMS-TS was considered as a diagnosis, during the COVID-19 pandemic.MethodsClinical records from 1st March 2020 to 30th June 2020 (inclusive) were retrospectively analysed to identify patients under the age of 18 years admitted to a tertiary London children’s hospital with a history of fever and CRP >60. Electronic notes were reviewed to determine final diagnosis.Results140 patients were admitted with a history of fever and CRP >60 during the study period. 58% (n=81) had PIMS-TS and 42% (n=59) had alternative diagnoses. Of those with an alternative diagnosis 81% (n=48) had infective diagnoses and of these 46% (n=22) had upper or lower respiratory tract infections;25% (n=12) had sepsis;13% (n=6) had urinary tract infections or pyelonephritis;10% (n=5) had gastroenteritis;4% (n=2) had lymphadenitis and 2% (n=1) had meningitis. 10% (n=5) had surgical diagnoses most commonly appendicitis (n=3). 5% (n=3) had inflammatory diagnoses;2 with an exacerbation of Crohn’s disease and 1 with vasculitis. 3% (n=2) had autoimmune diagnoses, 1 with juvenile idiopathic arthritis and 1 with Still’s disease who developed macrophage activation syndrome. 2% (n=1) had Burkitt leukaemia.ConclusionsIn the midst of a pandemic there is a high suspicion of PIMS-TS in unwell febrile children. The high numbers of patients with PIMS-TS admitted to this hospital reflects the regional referrals pathway for the PIMS-TS patients during the first wave of COVID-19. However infections remain a major cause of children presenting with fever and a high CRP. The range of alternative diagnoses outlined in our cohort is not surprising, when one considers that PIMS-TS is a disease with a subjective and broad case definition, with signs and symptoms overlapping with other serious diagnoses – infectious, surgical, inflammatory, autoimmune and malignant.The wider differential diagnoses should always be considered when children present with fever and a thorough history and examination is paramount. Alternative diagnoses may have indolent or more chronic symptoms. Our experience has shown that discussion within a multidisciplinary team has helped to ensure alternate diagnoses are not missed.ReferenceHealth Service Journal. National alert as ‘coronavirus-related condition may be emerging in children. April 2020. Available from: https://www.hsj.co.uk/acute-care/exclusive-national-alert-as-coronavirus-related-condition-may-be-emerging-in-children/7027496.article (Last accessed 5th March 2021).

A simulated single ventilator/dual patient ventilation strategy for acute respiratory distress syndrome during the COVID-19 pandemic.

The potential for acute shortages of ventilators at the peak of the COVID-19 pandemic has raised the possibility of needing to support two patients from a single ventilator. To provide a system for understanding and prototyping designs, we have developed a mathematical model of two patients supported by a mechanical ventilator. We propose a standard set-up where we simulate the introduction of T-splitters to supply air to two patients and a modified set-up where we introduce a variable resistance in each inhalation pathway and one-way valves in each exhalation pathway. Using the standard set-up, we demonstrate that ventilating two patients with mismatched lung compliances from a single ventilator will lead to clinically significant reductions in tidal volume in the patient with the lowest respiratory compliance. Using the modified set-up, we demonstrate that it could be possible to achieve the same tidal volumes in two patients with mismatched lung compliances, and we show that the tidal volume of one patient can be manipulated independently of the other. The results indicate that, with appropriate modifications, two patients could be supported from a single ventilator with independent control of tidal volumes.