Campbell, H; Lucidarme, J; Clark, SA; Heymer, EJ; Ribeiro, S; Bai, X; Ahmad, S; Ramsay, ME; Borrow, R; Ladhani, SN
(2025)
Increase in serogroup W invasive meningococcal disease in England associated with pilgrimage to Saudi Arabia, January 2024 to June 2025.
Eurosurveillance, 30 (31).
ISSN 1025-496X
https://doi.org/10.2807/1560-7917.es.2025.30.31.2500509
SGUL Authors: Ladhani, Shamez Nizarali
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Abstract
England is experiencing an increase in serogroup W invasive meningococcal disease (IMD) caused by ‘strain A’ of the meningococcal sequence type 11 clonal complex (MenW:cc11) Hajj strain sublineage. Travel-associated and non-travel-associated meningococci from four strain A substrains (A1–A4) accounted for 32 of 59 MenW IMD cases between January 2024 and June 2025, 14 in people returning from Saudi Arabia or household contacts; eight of 14 linked to Umrah pilgrimage. Communications about MenACWY vaccination for pilgrims year-round should be reinforced.
| Item Type: | Article | ||||||
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| Additional Information: | This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0) Licence. You may share and adapt the material, but must give appropriate credit to the source, provide a link to the licence and indicate if changes were made. Any supplementary material referenced in the article can be found in the online version. This article is copyright of the authors or their affiliated institutions, 2025. | ||||||
| Keywords: | Mass gatherings, MenW, Meningococcal disease, Public health, Travel, Vaccine, Humans, Saudi Arabia, Male, England, Adult, Female, Meningococcal Infections, Neisseria meningitidis, Travel, Meningococcal Vaccines, Middle Aged, Adolescent, Child, Serogroup, Young Adult, Neisseria meningitidis, Serogroup W-135, Aged, Meningitis, Meningococcal, Disease Outbreaks, Child, Preschool | ||||||
| SGUL Research Institute / Research Centre: | Academic Structure > Infection and Immunity Research Institute (INII) | ||||||
| Journal or Publication Title: | Eurosurveillance | ||||||
| ISSN: | 1025-496X | ||||||
| Language: | en | ||||||
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| Publisher License: | Creative Commons: Attribution 4.0 | ||||||
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| URI: | https://openaccess.sgul.ac.uk/id/eprint/117823 | ||||||
| Publisher's version: | https://doi.org/10.2807/1560-7917.es.2025.30.31.2500509 |
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