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TB Prevalence in Tanzania

A total of 65,902 cases of all forms were notified in 2016, which shows an increase of 5.6% or 3507 cases compared to the year 2015. Among the cases notified, new and relapse cases were 64,404 (95.5%) of which 27,655 (39%) were bacteriological confirmed. Table 2 below shows the comparison of TB notification in 2015 and 2016 by TB classification groups.

Tuberculosis cases notified in Tanzania 2015 – 2016

Indicators 2015   2016   Change  
  Cases % Cases % numb. %
All forms 62,180   65902   3580 5.9
New Cases            
Bacteriological confirmed TB cases 24,290 39.1 25,955 39.4 1,665 6.9
Pulmonary Clinically diagnosed TB cases 22,777 36.6 23,539 35.7 762 3.3
Extra-pulmonary Clinically diagnosed 12,679 20.4 13,336 20.2 657 5.2
Total 59,746 96.1 62,830 95.3 3,084 5.2
Previously treated          
Relapse 1,149 1.8 1,779 2.7 630 54.8
Treatment after Failure 99 0.2 143 0.2 44 44.4
Return after lost to follow up 244 0.4 268 0.4 24 9.8
Other previously treated 942 1.5 882 1.3 -60 -6.4
Total 2,576 4.1 3,072 4.7 496 19.3

Tuberculosis Notifications By Region

Dar es Salaam city has remained as the major contributor of TB cases notification contributing making 20% of all cases notified. There was considerable regional variation as in the previous years with 50% of cases being contributed by only 6 regions - Dar- es-Salaam, Mwanza, Mbeya, Morogoro, Arusha and Tanga. The data indicated that 15 regions notified below the national average of 129 cases per 100,000 population.

Tuberculosis Notification Rate

The notification rate of new and relapses TB cases was 129 cases per 100,000 population which was slightly higher compared to that of 2015 that was 125 per 100,000 population. Dar es Salaam region had the highest TB notification rates in the country at 244 cases per 100,000, Kigoma region has the lowest TB case notification rate of 45 cases per 100,000, followed by Unguja (46) and Katavi and Rukwa at 59.

Ten regions has notification rate of above national average are: Dar es Salaam; Iringa; Pwani; Arusha; Manyara; Njombe; Lindi; Mtwara Kilimanjaro and Mbeya. The notifications rates for Unguja and Pemba have been presented separately but in comparison to administrative regions in the Mainland. The figure below shows notification rate of TB cases by regions and Zanzibar.