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High Prevalence of Strongyloides among South Asian Migrants in Primary Care―Associations with Eosinophilia and Gastrointestinal Symptoms
Open AccessArticle

High Prevalence of Strongyloidiasis in Spain: A Hospital-Based Study

Barcelona Institute for Global Health, ISGlobal-Hospital Clinic, Universitat de Barcelona, 08036 Barcelona, Spain
Department of Global Public Health, Karolinska Institutet, 171 77 Solna, Sweden
Tropical Medicine Unit, Hospital de Poniente, El Ejido, 04700 Almería, Spain
Department of Infectious Diseases, Vall d’Hebron University Hospital, PROSICS Barcelona, 08035 Barcelona, Spain
Department of Infectious Diseases, Hospital Universitari Bellvitge, 08907 Barcelona, Spain
Infectious Diseases Department, Hospital del Mar-IMIM, 08003 Barcelona, Spain
Department of Microbiology, Hospital Sant Pau, 08041 Barcelona, Spain
Department of Infectious Diseases, Hospital Clinic, 08036 Barcelona, Spain
Department of Microbiology, Vall d’Hebron University Hospital, PROSICS Barcelona, 08035 Barcelona, Spain
Department of Microbiology, Hospital Universitari Bellvitge, 08907 Barcelona, Spain
Tropical Medicine Unit, Distrito Poniente, 04700 Almería, Spain
Tropical Medicine Unit Vall d’Hebron-Drassanes, PROSICS Barcelona, 08035 Barcelona, Spain
Parasitology Department, Centro Nacional de Microbiologia—Instituto de Salud Carlos III, 28020 Madrid, Spain
Department of Microbiology, Hospital Clínic, Barcelona 08036, Spain
Author to whom correspondence should be addressed.
STRONG-SEMTSI Working Group: Manuel Jesús Soriano-Pérez, Ana Belén Lozano-Serrano, Gracia Cruz, Philip Wikman, Guillermo Girones, Jose Maria Saugar, Mercè Gurgui Ferrer, Lorena Soto Reyes.
Pathogens 2020, 9(2), 107;
Received: 11 January 2020 / Revised: 7 February 2020 / Accepted: 8 February 2020 / Published: 11 February 2020
(This article belongs to the Special Issue Prevalence of Strongyloidiasis and Schistosomiasis)
Introduction: Strongyloidiasis is a prevailing helminth infection ubiquitous in tropical and subtropical areas, however, seroprevalence data are scarce in migrant populations, particularly for those coming for Asia. Methods: This study aims at evaluating the prevalence of S. stercoralis at the hospital level in migrant populations or long term travellers being attended in out-patient and in-patient units as part of a systematic screening implemented in six Spanish hospitals. A cross-sectional study was conducted and systematic screening for S. stercoralis infection using serological tests was offered to all eligible participants. Results: The overall seroprevalence of S. stercoralis was 9.04% (95%CI 7.76–10.31). The seroprevalence of people with a risk of infection acquired in Africa and Latin America was 9.35% (95%CI 7.01–11.69), 9.22% (7.5–10.93), respectively. The number of individuals coming from Asian countries was significantly smaller and the overall prevalence in these countries was 2.9% (95%CI −0.3–6.2). The seroprevalence in units attending potentially immunosuppressed patients was significantly lower (5.64%) compared with other units of the hospital (10.20%) or Tropical diseases units (13.33%) (p < 0.001). Conclusions: We report a hospital-based strongyloidiasis seroprevalence of almost 10% in a mobile population coming from endemic areas suggesting the need of implementing strongyloidiasis screening in hospitalized patients coming from endemic areas, particularly if they are at risk of immunosuppression.
Keywords: strongyloidiasis; Strongyloides stercoralis; prevalence; migrants; Spain strongyloidiasis; Strongyloides stercoralis; prevalence; migrants; Spain
MDPI and ACS Style

Requena-Méndez, A.; Salas-Coronas, J.; Salvador, F.; Gomez-Junyent, J.; Villar-Garcia, J.; Santin, M.; Muñoz, C.; González-Cordón, A.; Cabezas Fernández, M.T.; Sulleiro, E.; Arenas, M.M.; Somoza, D.; Vazquez-Villegas, J.; Treviño, B.; Rodríguez, E.; Valls, M.E.; LLaberia-Marcual, J.; Subirá, C.; Muñoz, J., on behalf of the STRONG-SEMTSI Working Group; High Prevalence of Strongyloidiasis in Spain: A Hospital-Based Study. Pathogens 2020, 9, 107.

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