WHO Disease Outbreak News

WHO disease outbreak news
  1. Meningococcal disease – Nigeria
    As of 19 March 2017 (epidemiological week 11), a total of 1407 suspected cases of meningitis and 211 deaths (case fatality rate: 15%) have been reported from 40 local government areas (LGAs) in five states of Nigeria since December 2016. Zamfara, Katsina and Sokoto account for 89% of these cases. Twenty-six LGAs from all five states reported 361 cases in epidemiological week 11 alone. Twenty-two wards in 15 LGAs have crossed the epidemic threshold. Three of these LGAs share borders with Niger. NmC is the predominant serotype in this outbreak.
  2. Human infection with avian influenza A(H7N9) virus – China
    On 17 March 2017, the National Health and Family Planning Commission of China (NHFPC) notified WHO of 22 additional laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus in mainland China.
  3. Yellow fever – Brazil
    As of 16 March 2017, yellow fever virus transmission continues to expand towards the Atlantic coast of Brazil in areas not deemed to be at risk for yellow fever transmission prior to the revised risk assessment, supported by the scientific and technical advisory group on geographical yellow fever risk mapping (GRYF), and published by WHO in the Disease Outbreak News of 27 January 2017 and 6 March 2017; as well as on the WHO International Travel and Health website on 31 January 2017, 14 February 2017, and 6 March 2017.
  4. Human infection with avian influenza A(H7N9) virus – China
    On 10 March 2017, the National Health and Family Planning Commission of China (NHFPC) notified WHO of 26 additional laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus in mainland China.
  5. Human infection with avian influenza A(H7N9) virus – China
    Between 24 February and 7 March 2017, a total of 58 additional laboratory-confirmed cases of human infection have been reported to WHO from mainland China and China, Hong Kong Special Administrative Region (SAR).
  6. Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia
    Between 6 and 21 February 2017 the National International Health Regulations (IHR) Focal Point of Saudi Arabia reported twelve (12) additional cases of Middle East Respiratory Syndrome (MERS) including three (3) fatal cases. Four (4) deaths among previously reported MERS cases were also reported (case numbers 1, 2, 4 and 6 in the Disease Outbreak News published on 10 February 2017).
  7. Lassa Fever – Benin, Togo and Burkina Faso
    On 20 February 2017, the Ministry of Health of Benin notified WHO of a Lassa fever case in Tchaourou district, Borgou Department, Benin, close to the border with Nigeria. The case was a pregnant woman who was living in Nigeria (close to the border with Benin).
  8. Yellow fever – Brazil
    As of 3 March 2017, yellow fever virus transmission continues to expand towards the Atlantic coast of Brazil in areas not deemed to be at risk for yellow fever transmission prior to the revised risk assessment, supported by the scientific and technical advisory group on geographical yellow fever risk mapping (GRYF), and published by WHO in the Disease Outbreak News of 27 January 2017, and on the WHO International Travel and Health website on 31 January 2017 and 14 February 2017.
  9. Human infection with avian influenza A(H7N9) virus – China
    On 18 February 2017, the National Health and Family Planning Commission of China (NHFPC) reported to WHO the results of genetic sequencing on virus isolates from two previously reported cases of human infection with avian influenza A(H7N9) virus from Guangdong province. Changes at the cleavage site of the HA gene suggestive of being highly pathogenic to poultry was confirmed by the Chinese National Influenza Centre of the Chinese Centre for Disease Control and Prevention (China CDC).
  10. Yellow fever – Brazil
    From 1 December 2016 to 22 February 2017, a total of 1336 cases of yellow fever infection (292 confirmed, 920 suspected, and 124 discarded), including 215 deaths (101 confirmed, 109 suspected, 5 discarded), have been detected in six states (Bahia, Espírito Santo, Minas Gerais, Rio Grande do Norte, São Paulo, and Tocantins). The estimated case fatality rate is 35% for confirmed cases and 12% for suspected cases. To date, the majority (86%) of the confirmed cases are men and of which, approximately 81% are aged between 21 and 60 years.
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