A test of syndromic surveillance using a severe acute respiratory syndrome model

Virus-virus interactions of febrile respiratory syndrome among patients in China based on surveillance data from February 2011 to December 2020

BACKGROUND

The burden of acute respiratory infections is still considerable, and virus-virus interactions may affect their epidemics, but previous evidence is inconclusive.

OBJECTIVE

To quantitatively investigate the interactions among respiratory viruses at both the population and individual levels.

METHODS

Cases tested for influenza virus (IV), respiratory syncytial virus (RSV), human parainfluenza virus (PIV), human Adenovirus (AdV), human coronavirus (CoV), human bocavirus (BoV) and rhinoviruses (RV) were collected from the pathogen surveillance for febrile respiratory syndrome (FRS) in China from February 2011 to December 2020. We used spearman's rank correlation coefficients and binary logistic regression models to analyze the interactions between any two of the viruses at the population and individual levels, respectively.

RESULTS

Among 120,237 cases, 4.5% were co-infected with two or more viruses. Correlation coefficients showed 7 virus pairs were positively correlated, namely: IV and RSV, PIV and AdV, PIV and CoV, PIV and BoV, PIV and RV, AdV and BoV, CoV and RV. Regression models showed except for the negative interaction between IV and RV (OR=0.70, 95%CI: 0.61-0.81), all other virus pairs had positive interactions.

CONCLUSION

Most of the respiratory viruses interact positively, while IV and RV interact negatively. This article is protected by copyright. All rights reserved.

The global pool of simulation exercise materials in health emergency preparedness and response: a scoping review with a health system perspective

Simulation Exercises (SimEx) are an established tool in defence and allied security sectors, applied extensively in health security initiatives under national or international legislative requirements, particularly the International Health Regulations (2005). There is, however, a paucity of information on SimEx application to test the functionality of health systems alongside emergency preparedness, response and recovery. Given the important implications health services resilience has for the protection and improvement of human life, this scoping review was undertaken to determine how the publicly available body of existing global SimEx materials considers health systems, together with health security functions in the event of disruptive emergencies.

The global review identified 668 articles from literature and 73 products from institutional sources. Relevant screening identified 51 materials suitable to examine from a health system lens using the six health system building blocks as per the WHO Health System Framework. Eight materials were identified for further examination of their ability to test health system functionality from a resilience perspective.

SimEx are an effective approach used extensively within health security and emergency response sectors but is not yet adequately used to test health system resilience. Currently available SimEx materials lack an integrated health system perspective and have a limited focus on the quality of services delivered within the context of response to a public health emergency. The materials do not focus on the ability of systems to effectively maintain core services during response.

Without adjustment of the scope and focus, currently available SimEx materials do not have the capacity to test health systems to support the development of resilient health systems. Dedicated SimEx materials are urgently needed to fill this gap and harness their potential as an operational tool to contribute to improvements in health systems. They can act as effective global goods to allow testing of different functional aspects of health systems and service delivery alongside emergency preparedness and response.

The work was conducted within the scope of the Tackling Deadly Diseases in Africa Programme, funded by the UK Department for International Development, which seeks to strengthen collaboration between the health system and health security clusters to promote health security and build resilient health systems.