Background: During a mass gathering, some participants may receive health care for injuries or illnesses that occur during the event. In-event first responders provide initial assessment and management at the event. However, when further definitive care is required, municipal ambulance services provide additional assessment, treatment, and transport of participants to acute care settings, such as hospitals. The impact on both ambulance services and hospitals from mass-gathering events is the focus of this literature review.Aim: This literature review aimed to develop an understanding of the impact of mass gatherings on local health services, specifically pertaining to in-event and external health services.Method: This research used a systematic literature review methodology. Electronic databases were searched to find articles related to the aim of the review. Articles focused on mass-gathering health, provision of in-event health services, ambulance service transportation, and hospital utilization.Results: Twenty-four studies were identified for inclusion in this review. These studies were all case-study-based and retrospective in design. The majority of studies (n=23) provided details of in-event first responder services. There was variation noted in reporting of the number and type of in-event health professional services at mass gatherings. All articles reported that patients were transported to hospital by the ambulance service. Only nine articles reported on patients presenting to hospital. However, details pertaining to the impact on ambulance and hospital services were not reported.Conclusions: There is minimal research focusing on the impact of mass gatherings on in-event and external health services, such as ambulance services and hospitals. A recommendation for future mass-gathering research and evaluation is to link patient-level data from in-event mass gatherings to external health services. This type of study design would provide information regarding the impact on health services from a mass gathering to more accurately inform future health planning for mass gatherings across the health care continuum. Ranse J , Hutton A , Keene T , Lenson S , Luther M , Bost N , Johnston ANB , Crilly J , Cannon M , Jones N , Hayes C , Burke B . Health service impact from mass gatherings: a systematic literature review. Prehosp Disaster Med. 2017;32(1):71–77.

Outdoor music festivals are unique events given that they are, for the most part, bounded and ticketed, and alcohol is served. They frequently have a higher incidence of patient presentations when compared with similar types of mass gatherings. Often, however, single events are reported in the literature, making it difficult to generalize the findings across multiple events and limiting the understanding of the “typical” patient presentations at these mass gatherings. The aim of this paper was to understand the characteristics of young people who have presented as patients to on-site health care at outdoor music festivals in Australia, and the relative proportion and type of injury and illness presentations at these events. This research used a nonexperimental design, utilizing a retrospective review of patient report forms from outdoor music festivals. Data were collected from 26 outdoor music festivals across four States of Australia during the year 2010. Females presented at greater numbers than males, and over two-thirds presented with minor illnesses, such as headaches. Males presented with injuries, in particular lacerations to their face and their hands, and alcohol and substance use made up 15% of all presentations. Hutton A , Ranse J , Verdonk N , Ullah S , Arbon P . Understanding the characteristics of patient presentations of young people at outdoor music festivals. Prehosp Disaster Med. 2014;29(2):1-7 .

This paper discusses the need for consistency in mass-gathering data collection and biomedical reporting. Mass gatherings occur frequently throughout the world, and having an understanding of the complexities of mass gatherings is important to inform health services about the possible required health resources. Factors within the environmental, psychosocial and biomedical domains influence the usage of health services at mass gatherings. The biomedical domain includes the categorization of presenting injury or illness, and rates such as patient presentation rate, transferred to hospital rate and referred to hospital rate. These rates provide insight into the usage of onsite health services, prehospital ambulance services. and hospital emergency department services.Within the literature, these rates are reported in a manner that is varied, haphazard and author dependent. This paper proposes moving away from an author-dependent practice of collection and reporting of data. An expert consensus approach is proposed as a means of further developing mass-gathering theory and moving beyond the current situation of reporting on individual case studies. To achieve this, a minimum data set with a data dictionary is proposed in an effort to generate conversation about a possible agreed minimum amount and type of information that should be collected consistently for research and evaluation at mass gatherings. Finally, this paper outlines future opportunities that will emerge from the consistent collection and reporting of mass-gathering data, including the possibility for meta-analysis, comparison of events across societies and modeling of various rates to inform health services. Ranse J , Hutton A . Minimum data set for mass-gathering health research and evaluation: a discussion paper. Prehosp Disaster Med. 2012;27(6):1-8.