Health-related research publications on religious mass gatherings of Muslims: a bibliometric analysis (1980–2020)

OBJECTIVE: Mass gatherings medicine is an emerging and important field at the national and international health security levels. The objective of the current study was to analyze research publications on religious mass gatherings of Muslims using bibliometric tools. METHODS: Keywords related to religious mass gatherings of Muslims were used in Scopus database. The duration of the study was from January 01, 1980 to December 31, 2020. Examples of keywords used include hajj, Umrah, mass gatherings/Mecca or Makkah, mass gatherings/Karbala, pilgrim/Makkah or Mecca, and others. Bibliometric indicators and mapping were presented. RESULTS: In total, 509 documents were retrieved. The average number of citations per article was 16.7 per document. Analysis of the retrieved documents indicated that (1) more than 90% of the retrieved documents were about the mass gatherings in Mecca/Makkah; (2) two-thirds of the retrieved documents were research articles; (3) a take-off phase in the number of publications was observed after 2008; (4) the retrieved documents were disseminated in a wide range of journals but specifically the ones in the fields of infectious diseases, public health, and travel medicine; (5) the retrieved documents were mainly published by scholars from Saudi Arabia with collaborative research ties with scholars in the US, France, the UK, and Australia; (6) Saudi Arabia contributed to more than half of the retrieved documents; and (7) four research themes were found: knowledge, attitude, and practices of pilgrims to Mecca/Makkah, vaccination, etiology of hospital admission among pilgrims, and epidemiology of various types of infectious diseases. CONCLUSIONS: Research on mass gatherings, specifically the Hajj, is emerging. Researchers from the Saudi Arabia dominated the field. Research collaboration between scholars in Saudi Arabia and scholars in low- and middle-income countries is needed and must be encouraged since these countries have weaker health systems to screen, monitor, and control the spread of infectious diseases because of the Hajj season.