BACKGROUND: Despite the wide use of vaccination, measles outbreaks still occur. AIMS: This study assessed cases notified during a measles outbreak in northern Sudan in 2011 and the response of the health authorities to contain the outbreak. ...A total of 445 measles cases were recorded, giving an incidence of 27.1 per 10 000 of the mining and resident population. Most cases 87.4 were aged between 15 and 34 years. ...