Yobe State Cholera Outbreak Situation Report No. 66: 26th November-2nd December 2018 Yobe State Ministry of Health
Highlights: Cholera reactive vaccination exercise conducted between 26th November-2nd December, 2018 in Gulani LGA 12 new suspected cholera cases were reported between 26th November- 2nd December from 2 LGAs (Damaturu and Gulani) 12 new samples were collected and tested, and yielded positive result for cholera using RDT. 0 death was reported.
Epidemiological Summary: The total number of suspected cholera cases reported in Yobe state is 1,812 with 61 associated deaths (CFR 3.37%). In the state, up to 591 cases have been reported in Gulani LGA, 485 cases in Gujba LGA and 488 cases in Damaturu LGA. In Fune LGA, 181 cases were reported and 67 cases were reported in Potiskum LGA.
Out of 147 samples collected and tested using cholera RDTs, 132 (89.8%) were positive and 15 (11.1%) were negative. Again, 13 (57%) out of 23 samples cultured were positive for Vibrio Cholerae. However, 9 positive samples were taken to national reference laboratory for quality checks and further analysis samples. Vibrio Cholerae O1 (Inaba) serotype was isolated in 4 out of the 9 samples.
Table 1: Summaries of suspected cholera cases in Yobe State from July to 2nd December 2018. Gulani Gujba Damaturu Fune Potiskum Total
Cases
New suspected cholera cases 1 0 11 0 0 12
Cumulative suspected cholera 591 485 488 181 67 1812 cases Number of wards in the LGA 12 10 11 13 10 56 Number of wards affected 10 8 11 9 10 48 Deaths New deaths 0 0 0 0 0 0 Cumulative deaths 20 19 6 12 4 61
Laboratory
Number of specimen tested (RDT) 39 13 83 12 0 147 Specimen Positive RDT 36 12 75 9 0 132 Pending result for RDT 0 0 0 0 0 0 Number of samples cultured 8 8 6 1 0 23 Specimen Positive Culture 5 4 3 1 0 13 Pending result for 0 0 0 0 0 0 Culture
Twelve new suspected cholera case were reported in Yobe state between 26th November- 2nd December 2018, showing the consistent decrease in number of cases compared to that previous week (Fig. 2). Eleven cases were reported from Damaturu (Fig 10). One case was reported from Gulani (Fig 4). No new case was reported from Gujba (Fig 6) in 5 weeks, no new case from Fune (Fig 8) in 6 weeks and Potiskum LGA has not reported any case in 11 weeks (Fig. 12). 1
Figure 1: Map of Yobe State showing number of suspected cholera cases in affected wards and LGAs
60 350 300 50 250 40 200 150 30 100
20 state 50
in Yobes tate 0 10 2-8 Jul 16-22 Jul 30-5th Aug 13-19 Aug 27-2 Sept 10-16 Sept 24-30 Sept 8-14 Oct 22-28 Oct 5-11 Nov 19-25 Nov **
0 7-Jul number of suspected cholera cases in in Yobe cases cholera suspected of number number suspected of cholera cases 5-Oct 8-Sep 3-Aug 16-Jul 25-Jul 1-Nov 14-Oct 23-Oct 17-Sep 26-Sep 12-Aug 21-Aug 30-Aug 10-Nov 19-Nov 28-Nov
Cases Deaths Cases Deaths
Figure 2: Epi-curve of suspected cholera cases in Yobe state. Figure 3: Epi-curve of suspected cholera cases in Yobe state.
2
25 90 80 20 70 60 15 50 40 10 30 Gulani 20 5 10 0 0 number of suspected in cholera suspected number cases of number of Suspected Cholera cases in in Gulani cases Cholera Suspected of number 5-Oct 7-Sep 3-Aug 20-Jul 27-Jul 2-Nov 9-Nov 12-Oct 19-Oct 26-Oct 14-Sep 21-Sep 28-Sep 10-Aug 17-Aug 24-Aug 31-Aug 16-Nov 23-Nov 30-Nov
Cases Deaths Cases Deaths
Figure 4: Epi-curve of suspected cholera cases in Gulani LGA. Figure 5: Weekly Epi-curve of suspected cholera cases in Gulani LGA.
35 140 30 120 25 100 80 20 60 15 40 Gujba 10 20 0
in Gujba 5 0 number of suspected in cholera suspected number cases of 7-Jul 3-Oct 1-Sep 9-Sep 8-Aug 15-Jul 23-Jul 31-Jul 4-Nov 11-Oct 19-Oct 27-Oct 17-Sep 25-Sep 16-Aug 24-Aug 12-Nov 20-Nov 28-Nov number suspected of cholera cases Cases Deaths Cases Deaths
Figure 6: Epi-curve of suspected cholera cases in Gujba LGA. Figure 7: Weekly Epi-curve of suspected cholera cases in Gujba LGA.
18 50 45 16 40 14 35 30 12 25 10 20 8 15 10 6 5 4 0 2 0 3-9 Sep 1-7 Oct 27-2 Sep 8-14 Oct 5-11 Nov 10-16Sep 17-23Sep 20-26Aug 15-21Oct Oct22-28 12-18Nov 19-25Nov 24-30Sept 5-Oct 7-Sep 2-Nov 9-Nov 12-Oct 19-Oct 26-Oct 14-Sep 21-Sep 28-Sep number of suspected cholera cases in in Fune cases cholera suspected of number 26Nov-2 Dec 24-Aug 31-Aug 16-Nov 23-Nov 30-Nov 29Oct-4 Nov number of Suspected Cholera cases in in Fune cases Cholera Suspected of number
Cases Deaths Cases Deaths
Figure 8: Epi-curve of suspected cholera cases in Fune LGA. Figure 9: Weekly Epi-curve of suspected cholera cases in Fune LGA
3
25 90 80 20 70 60 50 15 40 30 10 20 Damaturu Damaturu 10
in Damaturu 5 0
0 in cases cholera suspected of number 3-9 Sep 1-7 Oct 27-2 Sep 8-14 Oct 5-11 Nov 10-16Sep 17-23Sep 20-26Aug 15-21Oct 22-28Oct number suspected of cholera cases 12-18Nov 19-25Nov 24-30Sept 3-Oct 9-Oct 3-Sep 9-Sep 2-Dec 2-Nov 8-Nov 15-Oct 21-Oct 27-Oct 15-Sep 21-Sep 27-Sep 22-Aug 28-Aug 26Nov-2 Dec 14-Nov 20-Nov 26-Nov 29Oct-4 Nov
Cases Death Cases Deaths
Figure 10: Epi-curve of suspected cholera cases in Damaturu LGA. Figure 11: Weekly Epi-curve of suspected cholera cases in Damaturu LGA
7 25 6 20
5 15 4 10 3
Potiskum 5 2 Potiskum 0 1 0 number of suspected cholera cases in in cases cholera suspected of number 1-7 Oct 3-9 Sept Jul 6-12 Aug 8-14 Oct number of Suspected Cholera cases in in cases Cholera Suspected of number Oct Oct Oct Oct - 27-2 Sept Sep Sep Sep Sep 5-11 Nov Aug Aug Aug Nov Nov Nov Nov 13-19Aug 20-26Aug - - - - 22-28Oct ------10-16Sept 17-23Sept 12-18Nov 15-21Oct 30-5th Aug 24-30 Sept24-30 3 1 9 8 4 31 11 19 27 17 25 19-25Nov ** 16 24 26Nov-2 Dec 12 20 28 29Oct-4 Nov
Cases Death Cases Deaths
Figure 12: Epi-curve of suspected cholera cases in Potiskum LGA. Figure 13: Weekly Epi-curve of suspected cholera cases in Potiskum LGA.
Response Activities
Surveillance: Conducted sporadic testing of new suspected cholera cases using RDT and culture.