Conclusions
malaria, malaria infection
MALARIA
PBO-Pyrethroid-LLINs may still provide some additional personal protection to users compared to those using standard LLINs in the third year when malaria infection prevalence remained high. However, this protection did not extend to non-users of PBO-Pyrethroid-LLINs through any mass effect. The declining efficacy and low usage of PBO-Pyrethroid LLINs after 2 years suggests that schedules replacing nets every three years are unlikely to control malaria adequately and will leave populations unprotected. For maximum impact, distribution regimens must be adapted to the lifespan of new classes of LLINs products coming into the market and/or the longevity of this product should be enhanced to meet the WHO recommended durability of three years.