Conditions for deployment of mosquito nets treated with a pyrethroid and piperonyl butoxide: recommendations

Overview

In the ongoing transition of the WHO evaluation process for vector control products from WHOPES to the Prequalification Team, WHO has developed an updated policy recommendation on pyrethroid-PBO nets that takes into account the epidemiological trial data from Tanzania. This update is an attempt to further clarify the available evidence base for these types of nets, their categorization under the revised evaluation system, and the additional data required to support WHO’s policy-making process. This represents an exception to the standard review procedure, which requires a minimum of two epidemiological trials to assess the public health value of new vector control tools not covered by an existing WHO policy.