Erratum to: BMC Res Notes (2015) 8:716 DOI 10.1186/s13104-015-1711-x

Unfortunately the original version of this article [1] contained an incorrect reference.

Reference number 45 was a duplicate of reference number 43. This should have read:

Adam O, Makkawi T, Kannan A, Osman ME. Seroprevalence of rubella among pregnant women in Khartoum state, Sudan. East Mediterr Health J 2013;19:812–15.