PADI-web: a multilingual event-based surveillance system for monitoring animal infectious diseases

Global animal disease outbreak detection and monitoring rely on official sources, such as intergovernmental organisations, as well as digital media and other unofficial outlets. Manually extracting relevant information from unofficial sources is time-consuming. The Platform for Automated extraction of animal Disease Information from the web (PADI-web) is an automated biosurveillance system devoted to online news source monitoring for the detection of emerging/new animal infectious diseases by the French Epidemic Intelligence System. The tool automatically collects news via customised multilingual queries, classifies them and extracts epidemiological information. We detail each step of the PADI-web pipeline, with a focus on the new user-oriented features

Avian influenza (AI) outbreaks reported in Empres-i and AI relevant signals detected by PADI-web, ProMED and HealthMap (Agg.) from January to June 2016.

<p>Avian influenza (AI) outbreaks reported in Empres-i and AI relevant signals detected by PADI-web, ProMED and HealthMap (Agg.) from January to June 2016.</p

Description matrix describing candidates (rows) according to the rules they satisfy (columns).

<p>The example shows a description matrix for candidate locations.</p

Foot-and-mouth disease (FMD) outbreaks reported in Empres-i and FMD relevant signals detected by PADI-web, ProMED and HealthMap (Agg.) from January to June 2016.

<p>Foot-and-mouth disease (FMD) outbreaks reported in Empres-i and FMD relevant signals detected by PADI-web, ProMED and HealthMap (Agg.) from January to June 2016.</p

Information extraction step implemented in PADI-web.

<p>Information extraction step implemented in PADI-web.</p

Source and geographical distribution of confirmed outbreaks of African swine fever (ASF), foot-and-mouth disease (FMD), bluetongue (BTV) and avian influenza (AI), reported outside France, from January to June 2016.

<p>Percentages for under nine outbreaks are not shown.</p

Relevance of signals detected by PADI-web, ProMED and HealthMap (Agg.) for African swine fever (ASF), foot-and-mouth disease (FMD), bluetongue (BTV) and avian influenza (AI), from January to June 2016.

<p>Relevance of signals detected by PADI-web, ProMED and HealthMap (Agg.) for African swine fever (ASF), foot-and-mouth disease (FMD), bluetongue (BTV) and avian influenza (AI), from January to June 2016.</p

A. African swine fever, B. Foot-and-mouth disease, C. Bluetongue, D. Avian influenza.

<p>The figures show the lag in days from the onset of a primary outbreak, its immediate notification to the World Organisation for Animal Health (OIE) and its detection by PADI-web, ProMED and HealthMap (Agg.) from January to June 2016. Zero-day represents the date of immediate notification. The figures show the range from 55 days before to 25 days after immediate notification.</p

Bluetongue (BTV) outbreaks reported in Empres-i and BTV relevant signals detected by PADI-web, ProMED and HealthMap (Agg.) from January to June 2016.

<p>Bluetongue (BTV) outbreaks reported in Empres-i and BTV relevant signals detected by PADI-web, ProMED and HealthMap (Agg.) from January to June 2016.</p