The Weekly Epidemiological Record (WER) for 21 September 2012, vol. 87, 38 (pp. 357–368) includes:

– Outbreak news – Ebola, Democratic Republic of Congo – update

– Update on vaccine-derived polioviruses detected worldwide, April 2011– June 2012
http://www.who.int/entity/wer/2012/wer8738.pdf