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1.1 Tuberculosis case notification 2013


A total of 65,732 cases of all forms were notified in 2013, which shows an increase of 1,840 cases or 2.9% compared to the year 2012. Very interestingly the proportional increase looks the same for both the Mainland and Zanzibar. Among the cases notified, new cases were 62,952 (95.8%) and the re treatment cases were 2,780 (4.2%) which is almost same proportions for the past three years. Among the new TB cases, 24,565 (39%) were smear-positives, 21,393 (37%) were smear negatives and 14, 595 (23%) were extra-pulmonary TB with 10.6% being children under 15 years old. Both the number and proportions of new smear positive cases detected shows a 2% decrease compared to the previous year 2012. Table 3 below shows the comparison of TB notification in 2012 and 2013 by TB category groups.

 

Table 1: Tuberculosis cases notified in Tanzania 2012 – 2013

Indicators

2012

2013

Change

Cases

%

Cases

%

num.

%

All forms

63,892

65,732

1,840

2.9

New forms

- Pulmonary smear positive

25,138

39.3

24,565

37.4

(573)

-2.3

- Pulmonary smear negative

21,393

33.5

23,371

35.6

1,978

9.2

- Extra-pulmonary

14,595

22.8

15,016

22.8

421

2.9

Total

61,126

95.7

62,952

95.8

1,826

3.0

Re-treatment

- Relapse

1,052

1.6

1,101

1.7

49

4.7

- Failure

154

0.2

133

0.2

(21)

-13.6

- Return to control

201

0.3

251

0.4

50

24.9

- others

1,359

2.1

1,295

2.0

(64)

-4.7

Total

2,766

4.3

2,780

4.2

14

0.5

Notification rates (all forms) 100,000popn /yr)

142

142

0

0.1

Notification rates (new sm+/ 100,000popn/yr)

56

53

(3)

-4.9

Children (<=14 yrs)

5,283

8.6

6,658

10.6

1,375

26.0

1.1.1 Tuberculosis notification by regions


Although the proportion of cases notified in Dar es Salaam city is progressively declining, but still it is the major contributor with 21.8%, followed by Mwanza region-9.8% and Shinyanga region with 6.5%. A list of regions which contributed more than 4% remained the same as for the past three year with some other major cities increasing their contribution. Figure 1 below shows individual regions contribution by percentage and it indicates that over 70% of cases notified during the reporting year came from only 10 regions in the united republic of Tanzania. The remaining 20 regions contributed only a third of all TB cases notified in 2013. The reasons for such huge variations in among the regions need to be explored and investigated.

Figure 1: Distribution of TB cases notified by regions in 2013


 

 

Age-sex distribution of the new smear positive cases as in previous years shows that, the highest number of TB cases notified was in the age groups of 25-34 years and 35-44 years for both males and females as summarised in Figure 3 below. Similar patterns were also observed among the new smear negatives and extra-pulmonary TB cases notified.

Figure 2: Age and Sex distribution of new smear positive TB cases notified in 2013

 

The trend of treatment outcome results for the new smear-positive patients in the past ten consecutive years show that the treatment success rate has improved from about 80% in 2001 to 90% in 2012 and consistently maintained above 85% since 2005. Similarly the mortality rate has been declining since 2006 from 8% to 5.4% in 2012.

Figure 3: Trend of TB (new smear +) treatment outcomes for cohorts notified: 2001 – 2012

 

 

Further analysis of the cohort revealed that only three regions of Ilala II in Dar es Salaam, Kilimanjaro and Tabora had treatment success rate of below 85% and half of the rest performing above 90% figure 6 below.

Figure 4: Treatment success rate by region of TB cases (new and relapse) notified in 2012



 

Last Updated on Monday, 14 September 2015 10:49