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01.12.2012 | Research | Ausgabe 1/2012 Open Access

Malaria Journal 1/2012

Ownership and usage of mosquito nets after four years of large-scale free distribution in Papua New Guinea

Zeitschrift:
Malaria Journal > Ausgabe 1/2012
Autoren:
Manuel W Hetzel, Gibson Gideon, Namarola Lote, Leo Makita, Peter M Siba, Ivo Mueller
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​1475-2875-11-192) contains supplementary material, which is available to authorized users.

Competing interests

The authors declare that they have no competing interests.

Authors' contributions

MWH developed the study protocol and survey tools, supervised the data collection, analysed the data and wrote the manuscript. GG contributed to the development of survey tools, led the data collection, participated in data analysis and writing of the manuscript. NL developed the study database, organized data entry and contributed to data cleaning. LM revised the study protocol, supported the data collection and revised the manuscript. IM and PMS conceived the overall evaluation programme and supported data collection, analysis and manuscript writing. All authors (except GG) read and approved the final manuscript.

Abstract

Background

Papua New Guinea (PNG) is a highly malaria endemic country in the South-West Pacific with a population of approximately 6.6 million (2009). In 2004, the country intensified its malaria control activities with support from the Global Fund. With the aim of achieving 80% ownership and usage, a country-wide campaign distributed two million free long-lasting insecticide-treated nets (LLINs).

Methods

In order to evaluate outcomes of the campaign against programme targets, a country-wide household survey based on stratified multi-stage random sampling was carried out in 17 of the 20 provinces after the campaign in 2008/09. In addition, a before-after assessment was carried out in six purposively selected sentinel sites. A structured questionnaire was administered to the heads of sampled households to elicit net ownership and usage information.

Results

After the campaign, 64.6% of households owned a LLIN, 80.1% any type of mosquito net. Overall usage by household members amounted to 32.5% for LLINs and 44.3% for nets in general. Amongst children under five years, 39.5% used a LLIN and 51.8% any type of net, whereas 41.3% of pregnant women used a LLIN and 56.1% any net. Accessibility of villages was the key determinant of net ownership, while usage was mainly determined by ownership. Most (99.5%) of the household members who did not sleep under a net did not have access to a (unused) net in their household. In the sentinel sites, LLIN ownership increased from 9.4% to 88.7%, ownership of any net from 52.7% to 94.1%. Usage of LLINs increased from 5.5% to 55.1%, usage of any net from 37.3% to 66.7%. Among children under five years, usage of LLINs and of nets in general increased from 8.2% to 67.0% and from 44.6% to 76.1%, respectively (all p ≤ 0.001).

Conclusions

While a single round of free distribution of LLINs significantly increased net ownership, an insufficient number of nets coupled with a heterogeneous distribution led to overall low usage rates. Programme targets were missed mainly as a result of the distribution mechanism itself and operational constraints in this very challenging setting.
Zusatzmaterial
Authors’ original file for figure 1
12936_2012_2146_MOESM1_ESM.pdf
Authors’ original file for figure 2
12936_2012_2146_MOESM2_ESM.pdf
Authors’ original file for figure 3
12936_2012_2146_MOESM3_ESM.pdf
Authors’ original file for figure 4
12936_2012_2146_MOESM4_ESM.pdf
Literatur
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