Nigeria

NCDC Weekly Epidemiological Report: Volume 6, No. 45 - 18 November 2016

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Weekly updates on epidemics in Nigeria: as at 18th November, 2016 Issue: Volume 6 No. 45

Lassa fever

1**Lassa fever update for week 45 as at 18th November, 2016; (**Please note that the data reflects the routine reports i.e. all suspected cases including the laboratory positive and negative cases)

1.1. Four suspected cases of Lassa fever and 1 death (CFR, 25%) were reported from 3 LGA (3 States) in week 45, 2016 compared with 1 case from Jos North LGA (Plateau State) at the same period in 2015 (Figure 1).

1.2. Laboratory results of the 4 suspected were negative for Lassa fever and other VHFs.

1.3. Between weeks 1 and 45 (2016), 868 suspected Lassa fever cases with 89 lab-confirmed and 107 deaths (CFR, 12.33%) from 140 LGAs (29 States) were reported compared with 271 suspected cases with 13 lab-confirmed and seven (7) deaths (CFR, 2.58%) from 23 LGAs (12 States) at the same period in 2015 (Figure 1).

1.4. Between weeks 1 & 53 2015, 430 suspected Lassa fever cases with 25 lab-confirmed and 40 deaths (CFR, 9.30%) from 37 LGAs (14 States & FCT) were reported compared with 989 suspected cases with 110 lab-confirmed and 36 deaths (CFR, 3.64%) from 37 LGAs (13 States) at the same period in 2014 (Figure 2).

1.5. Investigation and active case search ongoing in affected states with coordination of all response activities by NCDC and support from partners.

1.5.1. National Surveillance and Outbreak Response Working Group meeting on-going at NCDC to assess the current Lassa fever situation in the Country 1.5.2. Response materials for VHFs prepositioned across the country by NCDC 1.5.3. New VHF guidelines being produced by NCDC 1.5.4. Reclassification of reported Lassa fever cases is ongoing 1.5.5. Reviewing the variable for case based surveillance for VHF 1.5.6. States are enjoined to intensify surveillance