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Physical Durability of Two Types of Long-Lasting Insecticidal Nets (LLINs) Three Years After a Mass LLIN Distribution Campaign in Mozambique, 2008–2011

2014; American Society of Tropical Medicine and Hygiene; Volume: 92; Issue: 2 Linguagem: Inglês

10.4269/ajtmh.14-0023

1476-1645

Juliette Morgan, Ana Paula Abílio, Maria do Rosario Pondja, Dulcisária Marrenjo, Jacinta Luciano, Guilhermina Fernandes, Samira Sabindy, Adam Wolkon, Gabriel Ponce de León, Adeline Chan, Jodi Vanden Eng,

Parasites and Host Interactions

We conducted a prospective evaluation to measure the physical durability of two brands of long-lasting insecticidal nets (LLINs) distributed during a campaign in 2008 in Nampula Province, Mozambique. Households with LLINs tagged during the campaign (6,000) were geo-located (34%) and a random sample was selected for each of 3 years of follow-up. The LLINs were evaluated in the field and a laboratory for presence of holes and a proportional hole index (pHI) was calculated following the World Health Organization guidelines. We performed 567 interviews (79.0%) and found 75.3% (72.1–78.4%) of households retained at least one LLIN after 3 years; the most common cause of attrition was damage beyond repair (51.0%). Hole damage was evident after 1 year, and increased by year. Olyset had a significantly greater mean number of holes and pHI compared with PermaNet 2.0 brand (all P values ≤ 0.001). Additional information about LLIN durability is recommended to improve malaria control efforts.