The scientific objective of this study is to test the protective effect of permethrin-treated lesus against P. falciparum malaria in infants and young children.
General Study Design: The proposed study is a double-blind, randomized control trial of permethrin-treated lesus to prevent P. falciparum malaria in children 6-24 months of age conducted at two sites in rural western Uganda. Participating mother-infant pairs will receive a new bed net and two permethrin-treated or untreated lesus at enrollment. The total sample size will be 400 mother-infant pairs with 200 pairs in each group. The investigators will follow participants longitudinally for six months. Participants will be instructed and incentivized to present to one of the two study clinics when a fever develops, where they will be evaluated, tested, and treated, if positive, for malaria. Participants will also attend scheduled clinic visits every two weeks for routine surveillance of adverse effects and to test for asymptomatic infection. Re-treatment and sham re-treatment of lesus will occur each month. Outcome Measures: The primary outcome measure is the incidence rate ratio of clinical (i.e., symptomatic) P. falciparum malaria in infants and children 6 - 24 months of age. Differences in malaria infection between treatment groups will be estimated with the incidence rate ratio, defined as the ratio of the number of clinical malaria episodes per 100 person-weeks at risk in the intervention group relative to the control group. This measure was chosen as it represents the most patient-centered measure of malaria burden, reflecting not only the potential negative health consequences, but also opportunity costs associated with care seeking and treatment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
400
0.5% permethrin soaked baby wraps (lesus)
Water soaked baby wraps (lesus)
Mbarara University of Science and Technology (MUST)
Mbarara, Uganda
Incidence of clinical malaria in child
The presence of typical symptoms (e.g., fever, lethargy) and a positive malaria Rapid Diagnostic Test (RDT) during observation
Time frame: 7 days after onset of symptoms
Change in child's hemoglobin level
Change in child's hemoglobin as measured by HemoCue® device
Time frame: (Week 0), Week 12, and Week 24 visits
Change in child's growth parameters
Change in child's height and weight (e.g., weight and height will be combined to report BMI in kg/m\^2).
Time frame: (Week 0), Week 12, and Week 24 visits
Change in child's nutritional status
Change in child's mid-upper arm circumference (MUAC)
Time frame: (Week 0), Week 12, and Week 24 visits using MUAC tape
Prevalence of asymptomatic parasitemia
Presence of malaria parasites on bi-weekly dried blood spot (DBS) as determined by quantitative polymerase chain reaction(qPCR).
Time frame: Every two weeks
Malaria hospitalization
Child admitted to inpatient ward for treatment of malaria
Time frame: 14 days after onset of symptoms
Incidence of clinical malaria in mother
The presence of typical symptoms (e.g., fever, lethargy) and a positive malaria RDT during observation
Time frame: 7 days after onset of symptoms
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Change in mother's hemoglobin level
Change in child's hemoglobin as measured by HemoCue® device
Time frame: (Week 0), Week 12, and Week 24 visits
Adverse reaction to permethrin treatment
Self-reported history on bi-weekly questionnaire and confirmation by clinical staff.
Time frame: 7 days after onset