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Summary
June 2008, Vol. 3, No. 3, Pages 275-278
, DOI 10.2217/17460913.3.3.275
(doi:10.2217/17460913.3.3.275)
Special Report The skin stage of malaria infection: biology and relevance to the malaria vaccine effort Photini Sinnis †* & Fidel Zavala *Department of Medical Parasitology, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA. photini.sinnis@nyu.edu Department of Molecular Microbiology & Immunology, Malaria Research Institute, Bloomberg School of Public Health, Johns Hopkins University, 615 N. Wolfe Street, Baltimore, MD 21205, USA. fzavala@jhsph.edu † Author for correspondence *Both authors contributed equally Plasmodium sporozoites, the infective stage of the malaria parasite, are injected into the mammalian host by mosquitoes and travel to the liver where they invade hepatocytes. Recent studies demonstrating that sporozoites are inoculated into the skin, remain there for hours before exiting and that 20% of the inoculum goes to the lymph node draining the inoculation site, suggest that there is a ‘skin stage’ to malaria infection that may set the stage for subsequent host responses to the parasite. Here, we present an overview of what is currently known about sporozoite–host interactions at the inoculation site and the draining lymph node, and discuss the impact of the skin stage of malaria on immunity to pre-erythrocytic stages and malaria vaccine design.
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