Improved Global Capacity for Influenza Surveillance

Polansky, Lauren; Outin-Blenman, Sajata; Moen, Ann

doi:10.3201/eid2206.151521

Cited by 31 publications

(30 citation statements)

References 20 publications

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“…( 21 ) In addition to the leadership of respective ministries of health, global efforts by WHO, the Centers for Disease Control and Prevention and other organizations have supported the establishment of national influenza surveillance systems in many resource-limited countries in non-temperate climates. ( 10 , 11 , 21 - 34 ) We believe it is time to maximize utilization of influenza surveillance data for routine actions for domestic and global public health assessment and response.…”

Section: Discussionmentioning

confidence: 99%

Establishing seasonal and alert influenza thresholds in Cambodia using the WHO method: implications for effective utilization of influenza surveillance in the tropics and subtropics

Arashiro

Ieng

et al. 2017

WPSAR

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ObjectiveTo establish seasonal and alert thresholds and transmission intensity categories for influenza to provide timely triggers for preventive measures or upscaling control measures in Cambodia.MethodsUsing Cambodia’s influenza-like illness (ILI) and laboratory-confirmed influenza surveillance data from 2009 to 2015, three parameters were assessed to monitor influenza activity: the proportion of ILI patients among all outpatients, proportion of ILI samples positive for influenza and the product of the two. With these parameters, four threshold levels (seasonal, moderate, high and alert) were established and transmission intensity was categorized based on a World Health Organization alignment method. Parameters were compared against their respective thresholds.ResultsDistinct seasonality was observed using the two parameters that incorporated laboratory data. Thresholds established using the composite parameter, combining syndromic and laboratory data, had the least number of false alarms in declaring season onset and were most useful in monitoring intensity. Unlike in temperate regions, the syndromic parameter was less useful in monitoring influenza activity or for setting thresholds.ConclusionInfluenza thresholds based on appropriate parameters have the potential to provide timely triggers for public health measures in a tropical country where monitoring and assessing influenza activity has been challenging. Based on these findings, the Ministry of Health plans to raise general awareness regarding influenza among the medical community and the general public. Our findings have important implications for countries in the tropics/subtropics and in resource-limited settings, and categorized transmission intensity can be used to assess severity of potential pandemic influenza as well as seasonal influenza.

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Section: Discussionmentioning

confidence: 99%

Establishing seasonal and alert influenza thresholds in Cambodia using the WHO method: implications for effective utilization of influenza surveillance in the tropics and subtropics

Arashiro

Ieng

et al. 2017

WPSAR

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show abstract

“…Although active and systematic surveillance for all respiratory viruses has increased globally and is strongest for influenza viruses, it is still lacking throughout much of the world. 51 Many questions remain about the seasonality of influenza and other respiratory viruses in tropical countries where there is increasing evidence of year-round circulation of influenza in warmer, more humid climates. [29][30][31]52 Country-specific studies to better understand the contribution of viruses to pneumonia are still required, especially from low-and middle-income countries.…”

Section: Gaps In Knowledge About the Epidemiology Of Respiratory Virumentioning

confidence: 99%

Epidemiology of Viral Pneumonia

Jain

2017

Clinics in Chest Medicine

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The burden of pneumonia, including that due to respiratory viruses, is markedly higher in the very young (<5 years) and older adults (≥50 years). Respiratory viruses substantially contribute to pneumonia in both adults and children, and when systematically tested for, are more commonly detected than bacteria in both adults and children. It is difficult to distinguish between viruses by clinical presentation, and the exact clinical implication of viral detections among patients with pneumonia depends on the pathogen detected; however, there is increasing evidence of their importance in pneumonia.

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“…21 In addition to the leadership of respective ministries of health, global efforts by WHO, the Centers for Disease Control and Prevention and other organizations have supported the establishment of national influenza surveillance systems in many resource-limited countries in non-temperate climates. 10,11,[21][22][23][24][25][26][27][28][29][30][31][32][33][34] We believe it is time to maximize utilization of influenza surveillance data for routine actions for domestic and global public health assessment and response.…”

Section: Moderate Thresholdmentioning

confidence: 99%

Untitled

2017

WPSAR

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Improved Global Capacity for Influenza Surveillance

Abstract: CDC’s international capacity-building program shows evidence of progress.

Cited by 31 publications

References 20 publications

Establishing seasonal and alert influenza thresholds in Cambodia using the WHO method: implications for effective utilization of influenza surveillance in the tropics and subtropics

Establishing seasonal and alert influenza thresholds in Cambodia using the WHO method: implications for effective utilization of influenza surveillance in the tropics and subtropics

Epidemiology of Viral Pneumonia

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