Welcome to the Surveillance Knowledge Repository

Click on a topic under the Key Topic Areas section in the left column, then select a resource  from the list of resources that appear for that topic. You may also search for specific topics by entering one or more keywords in the Search bar. You can filter the search results by Content Type, Year, or Author Name.


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Syndromic surveillance has historically been used to track infectious disease, but in recent years, many jurisdictions have utilized the systems to conduct all hazards surveillance and provide situational awareness with respect to previously identified issues. Flakka is a synthetic drug (class:... Read more

Content type: Abstract

The past decade has witnessed rapid development and implementation of numerous syndromic and other advanced surveillance systems to supplement traditional laboratory testing to identify the presence of novel influenza strains and track the impact on local populations. While much of the... Read more

Content type: Abstract

The purpose of this paper is to describe the use of the Electronic Surveillance System for the Early Notification of Community-based Epidemics (ESSENCE) and its ability to use hospital emergency room data for situational awareness.

Content type: Abstract

The recent focus on the 'One Medicine' concept has resulted in an increased awareness that the control of diseases in animal populations, whether zoonotic or not, can be of great public health importance. Zoonotic and foodborne diseases represent an immediate threat to the health of human... Read more

Content type: Abstract

We implemented the CDC EARS algorithms in our DADAR (Data Analysis, Detection, and Response) situational awareness platform. We encountered some skepticism among some of our partners about the efficacy of these algorithms for more than the simplest tracking of seasonal flu.

We analyzed... Read more

Content type: Abstract

Information about disease severity could help with both detection and situational awareness during outbreaks of acute respiratory infections (ARI). In this work, we use data from the EMR to identify patients with pneumonia, a key landmark of ARI severity. We asked if computerized analysis of the... Read more

Content type: Abstract

On August 20th and 21st, 2007, Ohio sustained heavy rains which resulted in severe flooding over a nine-county area in the north-central part of the state. Increased hospital emergency department (ED) visits were expected for gastrointestinal illnesses, but this was not observed. After a media... Read more

Content type: Abstract

As part of a greater statewide excessive heat response plan, New Hampshire (NH) has been performing HRI surveillance since 2010 to guide response efforts and ultimately reduce HRI morbidity and mortality during situations of excessive heat. Historically, NH hospital Emergency Department Heat... Read more

Content type: Abstract

Cyanobacteria and marine algae are ubiquitous in the earth's freshwaters and oceans. Under the right circumstances, these organisms can proliferate, causing harmful algal blooms (HABs) which may produce toxins that threaten human and animal health as well as local and regional ecology. Animals... Read more

Content type: Case Study

Los Angeles County’s (LAC) early event detection system captures over 60% of total ED visits, as well as 800 to 1,000 emergency dispatch calls from Los Angeles City Fire (LACF) daily. Both ED visits and EDC calls are classified into syndrome categories, and then analyzed for aberrations in count... Read more

Content type: Abstract


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