Nature Reviews Microbiology 11, 701–712 (2013)

In Box 3 of the above article (page 709) the sentence “Recently, it was found that five intravenous injections of >105 cryopreserved RAS protected all six tested patients against a challenge by bites of five mosquitoes 3 weeks after the last immunization dose, whereas four intravenous immunizations protected only three of nine patients139” should have read “Recently, it was found that five intravenous injections of >105 cryopreserved RAS protected all six tested patients against a challenge by bites of five mosquitoes 3 weeks after the last immunization dose, whereas four intravenous immunizations protected only six of nine patients139.” The authors apologize to readers for any misunderstanding caused. This has now been corrected online.