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. 2020 Feb;26(2):336–339. doi: 10.3201/eid2602.191043

Table. Characteristics of the 24 undiagnosed disease events posted on ProMED-mail that were also published in Disease Outbreak News, 2007–2018*.

ProMED-mail diagnosis date Country WHO zone Diagnosis Publication date Period, d†
2007 Sep 1 DRC AFRO Ebola 2007 Aug 31 –1
2007 Nov 9 Angola AFRO Bromide poisoning 2007 Nov 16 7
2008 Mar 8 Senegal AFRO Lead poisoning 2008 Jun 28 112
2008 Jun 23 Senegal AFRO Lead poisoning 2008 Jun 28 5
2008 Aug 21 China WPRO Powder milk intoxication 2008 Sep 18 28
2008 Oct 5 South Africa AFRO Lassa fever 2008 Oct 10 5
2008 Oct 9 DRC AFRO Ebola 2008 Dec 26 78
2008 Dec 22 DRC AFRO Ebola 2008 Dec 26 4
2010 Sep 27 Pakistan EMRO Crimean-Congo hemorrhagic fever 2010 Oct 25 28
2011 Aug 16 Angola AFRO Undiagnosed disease 2011 Aug 15 –1
2012 Jul 4 Cambodia WPRO Hand, foot and mouth disease 2012 Jul 4 0
2012 Jul 25 Uganda AFRO Ebola 2012 Jul 27 2
2012 Aug 2 Uganda AFRO Ebola 2012 Aug 3 1
2012 Dec 23 Sudan EMRO Yellow fever 2012 Nov 13 –41
2014 Feb 24 USA PAHO Human enterovirus infection 2014 Sep 17 205
2015 Feb 9 Brazil PAHO Zika virus infection 2015 Oct 21 254
2015 Jul 20 Egypt EMRO Dengue fever 2015 Nov 12 115
2015 Aug 15 Egypt EMRO Dengue fever 2015 Nov 12 90
2015 Sep 5 Senegal AFRO Chikungunya 2015 Sep 14 9
2016 Jun 25 South Sudan EMRO Undiagnosed disease 2016 May 19 –38
2016 Jan 22 Angola AFRO Yellow fever 2016 Feb 12 21
2017 Mar 8 Nigeria AFRO Meningitis 2017 Mar 24 16
2017 Apr 26 Liberia AFRO Meningitis 2017 May 5 9
2018 Jan 7 Kenya AFRO Chikungunya 2018 Feb 27 51

*AFRO, African Regional Office; DRC, Democratic Republic of the Congo; EMRO, Eastern Mediterranean Regional Office; PAHO, Pan American Health Organization; WHO, World Health Organization; WPRO, Western Pacific Regional Office.
†Time between notification on ProMED-mail and official publication in Disease Outbreak News (https://www.who.int/csr/don/archive/country). Negative numbers indicate publication in Disease Outbreak News first.