Malaria in travelers: A review of the GeoSentinel surveillance network
AuthorLeder, K; Black, J; O'Brien, D; Greenwood, Z; Kain, KC; Schwartz, E; Brown, G; Torresi, J
Source TitleCLINICAL INFECTIOUS DISEASES
PublisherUNIV CHICAGO PRESS
AffiliationMedicine - Royal Melbourne And Western Hospitals
Nossal Institute for Global Health
Document TypeJournal Article
CitationsLeder, K., Black, J., O'Brien, D., Greenwood, Z., Kain, K. C., Schwartz, E., Brown, G. & Torresi, J. (2004). Malaria in travelers: A review of the GeoSentinel surveillance network. CLINICAL INFECTIOUS DISEASES, 39 (8), pp.1104-1112. https://doi.org/10.1086/424510.
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C1 - Journal Articles Refereed
BACKGROUND: Malaria is a common and important infection in travelers. METHODS: We have examined data reported to the GeoSentinel surveillance network to highlight characteristics of malaria in travelers. RESULTS: A total of 1140 malaria cases were reported (60% of cases were due to Plasmodium falciparum, 24% were due to Plasmodium vivax). Male subjects constituted 69% of the study population. The median duration of travel was 34 days; however, 37% of subjects had a travel duration of < or =4 weeks. The majority of travellers did not have a pretravel encounter with a health care provider. Most cases occurred in travelers (39%) or immigrants/refugees (38%). The most common reasons for travel were to visit friends/relatives (35%) or for tourism (26%). Three-quarters of infections were acquired in sub-Saharan Africa. Severe and/or complicated malaria occurred in 33 cases, with 3 deaths. Compared with others in the GeoSentinel database, patients with malaria had traveled to sub-Saharan Africa more often, were more commonly visiting friends/relatives, had traveled for longer periods, presented sooner after return, were more likely to have a fever at presentation, and were less likely to have had a pretravel encounter. In contrast to immigrants and visitors of friends or relatives, a higher proportion (73%) of the missionary/volunteer group who developed malaria had a pretravel encounter with a health care provider. Travel to sub-Saharan Africa and Oceania was associated with the greatest relative risk of acquiring malaria. CONCLUSIONS: We have used a global database to identify patient and travel characteristics associated with malaria acquisition and characterized differences in patient type, destinations visited, travel duration, and malaria species acquired.
KeywordsInfectious Diseases; Infectious Diseases
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