Imperial College London

DrLucyOkell

Faculty of MedicineSchool of Public Health

Senior Lecturer & Royal Society Dorothy Hodgkin Fellow
 
 
 
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Contact

 

l.okell Website

 
 
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Location

 

410School of Public HealthWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{de:2022:10.1136/bmjgh-2021-008021,
author = {de, Cola MA and Sawadogo, B and Richardson, S and Ibinaiye, T and Traore, A and Compaore, CS and Oguoma, C and Oresanya, O and Tougri, G and Rassi, C and Roca-Feltrer, A and Walker, P and Okell, LC},
doi = {10.1136/bmjgh-2021-008021},
journal = {BMJ Global Health},
pages = {1--11},
title = {Impact of seasonal malaria chemoprevention on prevalence of malaria infection in malaria indicator surveys in Burkina Faso and Nigeria},
url = {http://dx.doi.org/10.1136/bmjgh-2021-008021},
volume = {7},
year = {2022}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Background In 2012, the WHO issued a policy recommendation for the use of seasonal malaria chemoprevention (SMC) to children 3–59 months in areas of highly seasonal malaria transmission. Clinical trials have found SMC to prevent around 75% of clinical malaria. Impact under routine programmatic conditions has been assessed during research studies but there is a need to identify sustainable methods to monitor impact using routinely collected data.Methods Data from Demographic Health Surveys were merged with rainfall, geographical and programme data in Burkina Faso (2010, 2014, 2017) and Nigeria (2010, 2015, 2018) to assess impact of SMC. We conducted mixed-effects logistic regression to predict presence of malaria infection in children aged 6–59 months (rapid diagnostic test (RDT) and microscopy, separately).Results We found strong evidence that SMC administration decreases odds of malaria measured by RDT during SMC programmes, after controlling for seasonal factors, age, sex, net use and other variables (Burkina Faso OR 0.28, 95% CI 0.21 to 0.37, p<0.001; Nigeria OR 0.40, 95% CI 0.30 to 0.55, p<0.001). The odds of malaria were lower up to 2 months post-SMC in Burkina Faso (1-month post-SMC: OR 0.29, 95% CI 0.12 to 0.72, p=0.01; 2 months post-SMC: OR: 0.33, 95% CI 0.17 to 0.64, p<0.001). The odds of malaria were lower up to 1 month post-SMC in Nigeria but was not statistically significant (1-month post-SMC 0.49, 95% CI 0.23 to 1.05, p=0.07). A similar but weaker effect was seen for microscopy (Burkina Faso OR 0.38, 95% CI 0.29 to 0.52, p<0.001; Nigeria OR 0.53, 95% CI 0.38 to 0.76, p<0.001).Conclusions Impact of SMC can be detected in reduced prevalence of malaria from data collected through household surveys if conducted during SMC administration or within 2 months afterwards. Such evidence could contribute to broader evaluation of impact of SMC programmes.
AU - de,Cola MA
AU - Sawadogo,B
AU - Richardson,S
AU - Ibinaiye,T
AU - Traore,A
AU - Compaore,CS
AU - Oguoma,C
AU - Oresanya,O
AU - Tougri,G
AU - Rassi,C
AU - Roca-Feltrer,A
AU - Walker,P
AU - Okell,LC
DO - 10.1136/bmjgh-2021-008021
EP - 11
PY - 2022///
SN - 2059-7908
SP - 1
TI - Impact of seasonal malaria chemoprevention on prevalence of malaria infection in malaria indicator surveys in Burkina Faso and Nigeria
T2 - BMJ Global Health
UR - http://dx.doi.org/10.1136/bmjgh-2021-008021
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000798756900003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://gh.bmj.com/content/7/5/e008021
UR - http://hdl.handle.net/10044/1/100077
VL - 7
ER -