Weekly Epidemiological Report

May 2018 Week 20



Posted: 05-06-2018 01:57:03 PM

Since the declaration of the outbreak of Ebola virus disease (EVD) in the Democratic Republic of Congo (DRC), Nigeria has continued to improve the level of preparedness in the country. The Emergency Operations Centre at the Nigeria Centre for Disease Control (NCDC) remains on alert mode, closely monitoring the situation in the DRC.

This week, preparedness activities in Nigeria were focused largely on strengthening screening measures at the major ports of entry, as well as capacity building of responders.

The Port Health Services (PHS) of the Federal Ministry of Health which is responsible for the provision of health and related services at the National Ports of Entry (PoE) held a meeting, aimed at increasing awareness among ports of entry stakeholders.

The screening processes for passengers were assessed at the Murtala Muhammed International Airport (MMIA), Lagos and Nnamdi Azikiwe International Airport (NAIA), Abuja. Staff at the PoEs were re-trained and mentored on how the appropriate screening processes should be carried out at the airports following the assessment. A training of Trainers was also carried out for PHS State Coordinators and heads of formations on improving surveillance activities.

In the coming week starting on the 4th of June 2018, there will be a training of clinicians and other health workers, who have been identified as first responders in the event of an outbreak of EVD. A major outcome of the training is to build the capacity of a team of first responders who will be ready and prepared to respond to any infectious disease outbreak or public health event.

The Nigeria Centre for Disease Control (NCDC) is committed to ensuring that all efforts are geared towards improving preparedness for all outbreaks/public health events as part of its mandate to protect the health of Nigerians. For more information on preparedness activities, kindly visit: www.ncdc.gov.ng


In the reporting week ending on May 20, 2018:

o There were 164 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 190 suspected cases of Cholera were reported from 11 LGAs in seven States (Adawama – 100, Bauchi – 22, Borno – 20, FCT – 1, Kaduna – 2, Kano – 44 & Zamfara - 1). Of these, 17 were laboratory confirmed and 17 deaths were recorded.

o 11 suspected cases of Lassa fever were reported from ten LGAs in six States (Adamawa – 3, Anambra – 2, Edo – 1, Osun– 1, Plateau – 3 & Taraba - 1). Three were laboratory confirmed and one death was recorded.

o There were 19 suspected cases of Cerebrospinal Meningitis (CSM) reported from 12 LGAs in five States (Borno – 5, Ebonyi – 2, Katsina – 10, Nasarawa – 1 & Yobe – 1). Of these, no was laboratory confirmed and no death was recorded.

o There were 284-suspected cases of Measles reported from 29 States. No laboratory-confirmed and no deaths recorded.

In the reporting week, all States sent in their report except Delta State. Timeliness of reporting remains 89% in both the previous and current weeks (week 19 & 20) while completeness increases from 99% to 100% at the 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 of May 20th, 2018, no new case of WPV was recorded

1.2. In the reporting week, 164 cases of AFP were reported from 139 LGAs in 27 States & FCT

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

12.2 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

1.2.3 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, 19 suspected Cerebrospinal Meningitis (CSM) cases were reported from 12 LGAs (five States; Borno – 5, Ebonyi – 2, Katsina – 10, Nasarawa – 1 & Yobe – 1) compared with 128 suspected cases with six Lab. Confirmed and four deaths (CFR, 3. 13%) from 45 LGAs (12 States) at the same period in 2017 (Figure 2)

2.2 Between weeks 1 and 20 (2018), 2970 suspected meningitis cases with 79 laboratory confirmed and 184 deaths (CFR, 6.20%) from 242 LGAs (29 States) were reported compared with 9472 suspected cases and 596 deaths (CFR, 6.29%) from 288 LGAs (31 States) during the same period in 2017.

2.3 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 - 20, 2018 as against 76.4% timeliness and 92.3% completeness recorded within the same period in 2017

2.4 The National CSM Emergency Operations Centre has been activated and is currently in response mode

2.5 There has been a decline in the number of new cases of CSM in the last four weeks.

2.6 The National CSM Guidelines are available via http://ncdc.gov.ng/themes/common/docs/protocols/51_1510449270.pdf


3.1 190 suspected cases of Cholera with 17 Lab. Confirmed cases and 17 deaths (CFR, 8.95%) were reported from 11 LGAs (seven States; Adawama – 100, Bauchi – 22, Borno – 20, FCT – 1, Kaduna – 2, Kano – 44 & Zamfara - 1) in week 20, 2018 compared with three suspected cases reported from Kaduna South LGA (Kaduna State) during the same period in 2017 (Figure 3).

3.2 Between weeks 1 and 20 (2018), 4827 suspected Cholera cases with 154 laboratory confirmed and 76 deaths (CFR, 1.57%) from 56 LGAs (18 States) were reported compared with 83 suspected cases and four deaths (CFR, 4.82%) from 15 LGAs (11 States) during the same period in 2017.

3.3 After Action Review meeting to the concluded cholera outbreak in Borno State conducted in Maiduguri from 30th – 31st May 2018

3.4 Rapid Response Team deployed to respond to the recent cluster of cases in Kano and Adamawa States

3.5 National Preparedness and Response to Acute Watery Diarrhoea/ Cholera Guidelines have been finalised: http://ncdc.gov.ng/themes/common/docs/protocols/45_1507196550.pdf

3.6 Ongoing plans for nationwide Cholera campaign with Federal Ministry of Water Resources and partner agencies


Please note that the data reflects the routine reports i.e. all suspected cases including the laboratory positive and negative cases

4.1 11 suspected cases of Lassa fever with one Lab confirmed and one death (CFR, 9.09%) were reported from ten LGAs (six States: Adamawa – 3, Anambra – 2, Edo – 1, Osun– 1, Plateau – 3 & Taraba - 1) in week 20, 2018 compared with four suspected cases with one Lab confirmed and two deaths (CFR, 50.0%) reported from four LGAs (three States) at the same period in 2017

4.2 Laboratory results of the 11 suspected cases; three were positive for Lassa fever (Adamawa – 1, Edo -1 & Taraba - 1) while the remaining eight were negative for Lassa fever & other VHFs (Adamawa – 2, Anambra – 2, Osun – 1 & Plateau – 3)

4.3 Between weeks 1 and 20 (2018), 1968 suspected Lassa fever cases with 431 laboratory confirmed cases and 118 deaths (CFR, 6.0%) from 141 LGAs (29 States) were reported compared with 286 suspected cases with 60 laboratory confirmed cases and 48 deaths (CFR, 16.78%) from 55 LGAs (21 States) during the same period in 2017 (Figure 4)

4.4 NCDC and Partners are holding the Lassa fever After Action Review Meeting (AAR) scheduled for 5th to 7th of June 2018 in Abuja

4.5 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

4.6 NCDC and Irrua Specialist Teaching Hospital have conducted the first and phase of nationwide training on Lassa fever case management in the South-West and South-East while that of North- East & North – West is scheduled for 12th to 14th June 2018

4.7 States are enjoined to intensify surveillance and promote Infection, Prevention and Control (IPC) measures in health facilities


5.1 In the reporting week, 284 suspected cases of Measles were reported from 29 States compared with 422 suspected cases with two Lab. Confirmed and six deaths (CFR, 1.42%) reported from 28 States during the same period in 2017

5.2 So far, 9880 suspected Measles cases with nine Lab. Confirmed and 93 deaths (CFR, 0.94 %) were reported from 36 States and FCT compared with 11283 suspected cases with 71 laboratory confirmed and 70 deaths (CFR, 0.62 %) 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

7. Update on national Influenza sentinel surveillance, Nigeria week 1 - 22, 2018

7.1. From week 1- 22, 147-suspected cases were reported, of which 138 were Influenza-like-illness (ILI), nine Severe Acute Respiratory Infection (SARI).

7.2 A total of 147 samples were received and 142 samples were processed. Of the processed samples, 133(93.7%) were ILI cases, nine (6.3%) were Severe Acute Respiratory Infection (SARI).

7.4. Of the 142 processed ILI samples, 16 (11.30%) was positive for Influenza A; 26(18.31%) positive for Influenza B and 100 (70.4%) were negative.

7.5 For the processed nine SARI samples, five (55.56%) were positive for Influenza A while the remaining four (44.44%) were negative.

7.6 42 (29.6%) of the processed 142 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 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 -18, five samples were left unprocessed


Surveillance Unit:

Nigeria Centre for Disease Control,

801 Ebitu Ukiwe Street, Jabi, Abuja, Nigeria.

[email protected]



Highlight of the week

  • 7. Update on national Influenza sentinel surveillance, Nigeria week 1 - 22, 2018

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