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NATNETS Achievements

Current LLIN Ownership, Access and Use

Over 28 million LLINs have been distributed since 2009, in addition to over 10 million nets sold through the TNVS since its inception. Tanzania is one of the first countries in Sub-Sahara Africa to have achieved universal coverage with a LLIN for every two people. ITN and LLIN use has increased to over 80% in many regions, up from 10% in 2000.  Tanzania is also one of the few countries which has a strong private sector network selling ITNs and LLINs, which is essential for the longer-term sustainability of net availability in the country.
According to the latest national malaria household survey undertaken late 20111, over 91% of all households in mainland Tanzania own at least one Insecticide Treated Net (ITN) or Long-Lasting Insecticidal Net (LLIN), with an average number of 2.2 per household. 75% of the population have access to an ITN and 68% of the general population slept under an ITN the night before. Use amongst those household that had sufficient LLINs for all members (i.e. one net for every two people) was extremely high with an average of 93% (as shown in the graph below).

 

Chart 1: Household Access and Use of LLINs
(Source: THMIS 2011/12)


Use amongst those household that had sufficient LLINs for all members (i.e. one net for every two people) was extremely high with an average of 93% (as shown in the graph below). This suggests that lack of access is the main barrier to increasing use in the population, and not behaviour.

 

Chart 2: Percentage of population having access to an ITN, that use an ITN
(Source: THMIS 2011/12)

One quarter of the LLINs were not used the night before the survey, with 51% of respondents stating that they were ‘saving the net for later’. This suggests that nets are valued, and that there is a strong demand for nets. It also indicates that there is a buffer stock of approximately 12% of LLINs in the communities at the time of the survey.

Malaria Prevalence

As a result of a upscaling of ITN interventions and improved malaria case management, malaria prevalence has halved in the past five years from 18% in 2007/8 to 9% in 2011/12 (Tanzania HIV/AIDS and Malaria Indicator Survey THMIS 2011-12).
Current data suggests that Tanzania is currently under a malaria epidemiological transition, with 60% of the population are now living in hypo-endemic areas (parasitaemia 0 - <10 %), up from 30% in 2000 as shown in the maps below.

The malaria epidemiological transition endemicity classes

The malaria epidemiological transition endemicity classes

However despite the progressive decline in malaria prevalence over the past decade, Tanzania remains highly vulnerable for malaria transmission due to the climatic and geographic suitability in most of the country, even where prevalence has declined due to control efforts. Continued and sustained investments in malaria control remain vital.

Infant and Child Mortality

Tanzania has seen a 48% decline in all-cause mortality in children under the age of five between 2000 and 2010, from 147 per 1000 live births to 80 per 1000. Tanzania is very likely to achieve MDG 4 by 2015, one of the few major African countries to do so. While of course not all of that massive reduction can be attributed to malaria control, there is solid evidence that it is an important contributing factor. As the Tanzanian population becomes increasingly malaria-free, it becomes healthier and more productive.


1Tanzania HIV Malaria Indicator Survey (THMIS) 2011/2012; National Bureau of Statistics and Macro International