Table 1.
Incidence of invasive meningococcal disease at mass gathering events, 2008–2018
| Event | Outbreak location, year | Attendance, n | Age of attendees, years | IMD cases, n | Attack rate per 100,000 | Attendee country of origin | Age, years | Sero-group | Serogroup/isolate found in country of event (yes/no) | Secondary IMD cases (non-attendees) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cummiskey [23] | European Youth Olympic Sports Festival | Spain, 2007 | 1500 | NA | 1 | NA | NA | 16 | B | NA | NA |
| Memish [17] |
Hajj; Umrah |
Saudi Arabia, 2002–2011 | NA | NA |
16 (Hajj) 1 (Umrah) |
0.21 (2002) 0.01 (2010) |
NA | NA | NA | NA | NA |
| Tezer [25] | Refugee camp | Turkey, NA | NA | NA | 1 | NA | Syria | 11 | B | NA | NA |
| Kanai [24] | World Scout Jamboree | Japan, 2015 | > 33,000 | 14–17 (scouts) | 6 | 19.5 |
Scotland (4 cases) Sweden (2 cases) |
NA | W | No | 1 |
| Stefanelli [26] | Refugee camp | Italy, 2015, 2016 | NA | NA | 4 | NA |
Eritrea Mali Niger Bangladesh |
15 20 31 24 |
X | NA | NA |
| Patel [28], Doedeh [27] | Funeral | Liberia, 2017 | NA | NA | 14 | NA | Liberia | NA |
C (13 cases) NA (1 case) |
NA | NA |
NA not available