Welcome to the Surveillance Knowledge Repository

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Traditional influenza surveillance relies on reports of influenzalike illness (ILI) by healthcare providers, capturing individuals who seek medical care and missing those who may search, post, and tweet about their illnesses instead. Existing research has shown some promise of using data from... Read more

Content type: Abstract

Globally, disease surveillance systems suffer from a number of resource constraints. These constraints are more pronounced in developing countries, which bear the greatest burden of disease and where pathogens are more likely to emerge, reemerge, and mutate into drug-resistant strains (US-GAO... Read more

Content type: Webinar

Influenza is one of the significant causes of morbidity and mortality globally. Previous studies have demonstrated the benefit of laboratory surveillance and its capability to accurately detect influenza outbreaks earlier than syndromic surveillance.1-3 Current laboratory surveillance has an... Read more

Content type: Abstract

We evaluated several classifications of emergency department (ED) syndromic data to ascertain best syndrome classifications for ILI.

Content type: Abstract

In response to increasing reports of avian influenza being identified throughout the eastern hemisphere, the World Health Organization and the U.S. Department of Health and Human Services have published pandemic influenza preparedness plans. These plans include detailed recommendations for... Read more

Content type: Abstract

A major goal of biosurveillance is the timely detection of an infectious disease outbreak. Once a disease has been identified, another very important goal is to find all known cases of the disease to assist public health investigators. Natural language processing (NLP) systems may be able to... Read more

Content type: Abstract

Outbreaks of Avian influenza (AI) in poultry were first reported in Nigeria in 2006 (1). The only human case was reported in 2007 (1). The epizootics of AI among poultry and wild birds and subsequent risk to human health highlighted the need to detect influenza viruses with pandemic potential... Read more

Content type: Abstract

In June 2009, the CDC defined a confirmed case of H1N1 as a person with an ILI and laboratory confirmed novel influenza A H1N1 virus infection. ILI is defined by the CDC as fever and cough and/or sore throat, in the absence of a known cause other than influenza. ILI cases are usually reported... Read more

Content type: Abstract

Data submitted to ILINet from ambulatory practices are a primary feature of influenza-like illness (ILI) surveillance in the United States. Practices count relevant patient records and submit this data manually to ILINet. The ongoing data collection is useful for surveillance, and a significant... Read more

Content type: Abstract

Edward Goldstein, PhD, Harvard School of Public Health, Senior Research Scientist, Department of Epidemiology discusses his paper "Predicting the Epidemic Sizes of Influenza A/H1N1, A/H3N2, and B: A Statistical Method." Published in PLoS Med. 2011 Jul;8(7): e1001051.


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Content type: Webinar


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