Infectious disease surveillance for generating early warnings to enable a prompt response during mass gatherings has long been a challenge in India as well as in other parts of the world. Ujjain, Madhya Pradesh in Central India hosted one of the largest religious festival in the world called ‘Simhasth kumbh mela’ on the banks of River Kshipra, where more than 50 million attendees came for holy dip during April 22 to May 21, 2016. The attendees included pilgrims (residents and visitors), observers, officials and volunteers.

Panchkroshi yatra is an annual ritual of circumambulation (yatra) of temples (Mahadevs) and 100,000 devotees walk for around 15 miles per day for six days and cover a total of 73 miles to worship important Mahadevs. The festival is held every year at the city of Ujjain, Madhya Pradesh, Central India. The yatra attracts large number of pilgrims especially from rural areas and usually women outnumber men. During the yatra, the pilgrims halt at several places and prepare their food in outdoors.

In preparation for mass gathering events, DPH conducts enhanced syndromic surveillance activities to detect potential cases of anthrax, tularemia, plague, and other potentially bioterrorism-related communicable diseases. While preparing for Saint Louis to host a Presidential Debate on October 9, 2016, DPH was asked by a partner organization whether we could also detect emergency department (ED) visits for injuries (e.g., burns to the hands or forearms) that could possibly indicate bomb-making activities.

Objective:

The massive flow of people to mass gathering events, such as festivals or sports events like EURO 2016, may increase public health risks. In the particular context of several terrorist attacks that took place in France in 2015, the French national Public Health agency has decided to strengthen the population health surveillance systems using the mandatory notification disease system and the French national syndromic surveillance SurSaUD®.