Weekly Epidemiological Report

July 2018 Week 29


Timely and complete reporting for disease surveillance

Posted: 07-08-2018 02:38:26 PM

In this week’s editorial, we review the importance of the use of timely and complete data in disease surveillance and response. The focus is on the need for surveillance data from the Local Government to the State and to the NCDC at the national level, to be timely, complete and analysed for decision making.

Timeliness and completeness of data are important attributes of a surveillance system. When reports are sent timely, there is a higher chance of detection of an outbreak or change in trend. This contributes to a prompt and effective response. In addition, timeliness is a key element in preventing the transmission or spread of a communicable disease. The 2016/2017 Meningitis outbreak highlighted the effects of time delays including in reporting, on the outbreak response. Read via


The Nigeria Centre for Disease Control has begun the implementation of various strategies to support timely and complete reporting. This includes the roll out of mSERS for aggregate reporting and SORMAS for case based surveillance. In addition, we have begun training of staff at LGA and State level on the importance and principles of the Integrated Disease Surveillance and Response strategy (IDSR).

It is important for State Governments to support the State epidemiologists and surveillance officers to ensure that all functional health facilities, public or private, report timely through the national disease surveillance system.

We have also utilised the opportunities through After Action Review (AAR) meetings to evaluate the response to outbreaks and highlight lessons learnt including recommendations for future outbreaks. These are in discussions with relevant stakeholders including State Epidemiologists.

States are therefore encouraged to support the LGAs and health facilities to achieve timely and complete surveillance report for prompt actions and interventions.


1. Integrated Disease Surveillance and Response (IDSR) Technical Guidelines 2013


In the reporting week ending on July 22, 2018:

o There were 177 new cases of Acute Flaccid Paralysis (AFP) reported. None was confirmed as Polio. The last reported case of Polio in Nigeria was in August 2016. Active case search for AFP is being intensified as Nigeria has reinvigorated its efforts at eradicating Polio.

o 191 suspected cases of Cholera were reported from 17 LGAs in seven States (Adamawa – 24, Bauchi – 6, Borno – 4, Gombe – 1, Jigawa – 10, Kano – 60 and Katsina - 86). Of these, three were laboratory confirmed and eight deaths were recorded.

o 33 suspected cases of Lassa fever were reported from seven LGAs in four States (Adamawa – 1, Edo – 5, Kogi – 20 & Ondo – 7). Six were laboratory confirmed and three deaths were recorded.

o There were nine suspected cases of Cerebrospinal Meningitis (CSM) reported from six LGAs in four States (Cross River – 2, Enugu – 4, Katsina – 2 & Yobe – 1). Of these, no was laboratory confirmed case and no death was recorded.

o There were 239 suspected cases of Measles reported from 32 States. None was laboratory confirmed and no death was recorded.

In the reporting week, all States sent in their report except Kaduna State. Timeliness of reporting remains 88% in both previous and current weeks (week 28 & 29) while completeness also remains 99% at same period. It is very important for all States to ensure timely and complete reporting at all times, especially during an outbreak.


1. AFP

1.1. As at July 22nd 2018, no new case of WPV was recorded

1.2. In the reporting week, 177 cases of AFP were reported from 157 LGAs in 34 States and FCT

1.3. Between week 1 and 29 2018, 4797 suspected cases of AFP have been reported from 717 LGAs in 37 States

1.3.1. AFP Surveillance has been enhanced and outbreak response is on-going in Borno and other high-risk States

1.3.2. The 2nd NIPDs was conducted from 30th June to 3rd July, 2018 using bOPV in 36 States plus FCT

1.3.3. The 1st & 2nd Outbreak response (OBR) to cVDPV2 in Jigawa & Gombe States, Polio event in Sokoto (SLGAs) and mop-up response in 11 LGAs in Bauchi State conducted from 10th – 13th & 26th – 29th May, 2018 using mOPV2 respectively

1.3.4. Two SIPDs and one NIPDs were conducted from January to April, 2018 using bOPV in 18 high risk States and 36 States plus FCT respectively


2.1 In the reporting week, nine suspected Cerebrospinal Meningitis (CSM) cases were reported from six LGAs (four States; Cross River – 2, Enugu – 4, Katsina – 2 & Yobe – 1) compared with 10 suspected cases reported from ten LGAs (ten States) at the same period in 2017 (Figure 1)

2.2 Between weeks 1 and 29 (2018), 3223 suspected meningitis cases with 108 laboratory confirmed and 206 deaths (CFR, 6.39%) from 256 LGAs (30 States) were reported compared with 9740 suspected cases and 602 deaths (CFR, 6.2%) from 303 LGAs (32 States) during the same period in 2017.

2.3 After Action Review (AAR) meeting to evaluation the response to 2017/2018 CSM outbreak is scheduled for 13-15 August, 2018 in Abuja

2.4 Timeliness/completeness of CSM case-reporting from States to the National Level (2018 versus 2017): on average, 88.2% of the 26 endemic States sent CSM reports in a timely manner while 98.2% were complete in week 1 - 29, 2018 as against 76.4% timeliness and 92.3% completeness recorded within the same period in 2017


3.1 191 suspected cases of Cholera with 17 Laboratory Confirmed cases and four deaths (CFR, 2.09%) were reported from 17 LGAs (seven States; Adamawa – 24, Bauchi – 6, Borno – 4, Gombe – 1, Jigawa – 10, Kano – 60 and Katsina - 86) in week 29, 2018 compared with 81 suspected cases and three death (CFR, 3.7%) reported from eight LGAs (five States) during the same period in 2017 (Figure 2). There is a decline in the number of new cases reported.

3.2 Between weeks 1 and 29 (2018), 11295 suspected Cholera cases with 320 laboratory confirmed and 163 deaths (CFR, 1.44%) from 111 LGAs (22 States) were reported compared with 953 suspected cases and 25 deaths (CFR, 2.62%) from 34 LGAs (13 States) during the same period in 2017.

3.3 A National Emergency Operations Centre (EOC) for Cholera has been activated at level 2 at NCDC.

3.4 Rapid Response Teams have been deployed to respond to recent cluster of cases in Kano, Bauchi, Plateau, Zamfara and Adamawa States.

3.5 NCDC, Partners and stakeholders conducted development of medium term strategies for Cholera control including mapping of the hot spots in Nigeria on the 19th July, 2018

3.6 OCV vaccines for second round vaccination campaign in Adamawa State scheduled for 11-15 August, 2018 have been received from ICG

3.7 National Preparedness and Response to Acute Watery Diarrhoea/ Cholera Guidelines available via http://ncdc.gov.ng/themes/common/docs/protocols/45_1507196550.pdf


4.1 In the reporting Week 29 (July 16 - 22 , 2018) six new confirmed I cases were reported from Edo (5) and Ondo (1) with three new deaths from Edo (2) and Ondo (1) States

4.2 From 1st January to 22nd July 2018, a total of 2238 suspectedi cases have been reported from 21 states. Of these, 467 were confirmed positive, 10 are probable, 1761 negative (not a case)

4.3 Since the onset of the 2018 outbreak, there have been 120 deaths in confirmed cases and 10 in probable cases. Case Fatality Rate in confirmed cases is 25.7%

4.4 21 states have recorded at least one confirmed case across 71 Local Government Areas (Edo, Ondo, Bauchi, Nasarawa, Ebonyi, Anambra, Benue, Kogi, Imo, Plateau, Lagos, Taraba, Delta, Osun, Rivers, FCT, Gombe, Ekiti, Kaduna, Abia and Adamawa). Seventeen states have exited the active phase of the outbreak while four - Edo, Ondo, Plateau and Taraba States remain activeiv

4.5 The Lassa fever national multi-partner, multi-agency Technical Working Group (TWG) continues to coordinate response activities at all levels. Response and laboratory supplies have been provided to priority States

4.6 National VHF guidelines (National Viral Haemorrhagic Fevers Preparedness guidelines, Infection Prevention and Control of VHF and Standard Operating Procedures for Lassa fever management) are available on the NCDC website- http://ncdc.gov.ng/diseases/guidelines


5.1 In the reporting week, 239 suspected cases of Measles were reported from 32 States compared with 281 suspected cases reported from 33 States during the same period in 2017

5.2 So far, 12501 suspected Measles cases with 13 Lab. Confirmed and 96 deaths (CFR, 0.77 %) were reported from 36 States and FCT compared with 15148 suspected cases with 108 laboratory confirmed and 88 deaths (CFR, 0.58 %) from 37 States during the same period in 2017

5.3 Response measures include immunization for all vaccine-preventable diseases in some selected/affected wards/LGAs during SIAs, as well as case management

6 Yellow fever

6.1 In this reporting week 9th – 15th July, 2018, 91 suspected cases were added to the national line list

6.2 One new in-country presumptive positive was report from Maitama District Hospital Abuja in the reporting week, last presumptive positive case in the Nigerian lab was 2-July-18 and last IP Dakar confirmed case from Nigeria was on 6-June -2018

6.3 From the onset of this outbreak on September 12, 2017, a total of 2,400 suspected yellow fever cases with 47 Laboratory confirmed and 47 deaths (CFR, 1.96%) have been reported from 504 LGAs (36 States & FCT)

6.4 Predominant age groups affected among the suspected cases are 20 years and below accounting for 62.5%; [male to female ratio is 1.4 to 1 (male 58.0%, female 42.0%)]

6.5 Surveillance activities have been intensified across all States

6.6 NCDC and partners have completed the assessment of some laboratories in Nigeria for possible inclusion into the testing laboratory network

6.7 NCDC & partners conducted detailed case investigation in Edo and Ekiti states following recent reports and currently in Rivers State

7. Update on national Influenza sentinel surveillance, Nigeria week 1 - 30, 2018

7.1. From week 1- 30, 175-suspected cases were reported, of which 155 were Influenza like-illness (ILI), 20 Severe Acute Respiratory Infection (SARI).

7.2 A total of 175 samples were received and five samples are ongoing Laboratory process. Of the processed samples, 154(90.6%) were ILI cases, 16 (9.4%) were Severe Acute Respiratory Infection (SARI).

7.4. Of the 154 processed ILI samples, 16 (10.4%) was positive for Influenza A; 26(16.9%) positive for Influenza B and 112 (72.7%) were negative.

7.5 For the processed 16 SARI samples, five (31.3%) were positive for Influenza A while the remaining 11 (68.7%) were negative.

7.6 42 (24.7%) of the processed 170 samples were positive for Influenza, with 16 (38.1%) of these positive for Influenza A and 26 (61.9%) positive for Influenza B.

7.5. The subtypes A seasonal H3, 2009A/H1N1 and A/not subtyped account for (0.0%), 11 (68.8%) and 5 (31.2%) of the total influenza A positive samples respectively.

7.6 The subtypes B VICTORIA, B Not subtyped and B Yamagata account for 10(38.5%), 16(61.5%) and 0(0.0%) of the total influenza B positive samples respectively

7.7 The percentage influenza positive was highest (75.0%) in week 6, 2018

7.8 In the reporting week 1 -30, five samples are undergoing Lab process


Surveillance Unit:

Nigeria Centre for Disease Control,

801 Ebitu Ukiwe Street, Jabi, Abuja, Nigeria.

[email protected]



Highlight of the week

  • 6 Yellow fever
  • 7. Update on national Influenza sentinel surveillance, Nigeria week 1 - 30, 2018

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