03941nas a2200481 4500000000100000008004100001260003700042653002400079653005700103653002200160653002900182653002100211100001200232700001200244700001300256700001200269700001300281700001300294700001600307700001200323700001200335700001200347700001200359700001400371700001100385700001300396700001200409700001200421700001200433700001200445700001200457700001300469700001200482700001200494700001600506700001300522245022600535856009900761300001300860490000700873520256500880022001403445 2022 d bPublic Library of Science (PLoS)10aInfectious Diseases10aPublic Health, Environmental and Occupational Health10aalbendazole (ALB)10adiethylcarbamazine (DEC)10aivermectin (IVM)1 aTavul L1 aLaman M1 aHoward C1 aKotty B1 aSamuel A1 aBjerum C1 aO’Brian K1 aKumai S1 aAmuga M1 aLorry L1 aKerry Z1 aKualawi M1 aKarl S1 aMakita L1 aJohn LN1 aBieb SV1 aWangi J1 aWeil GJ1 aGoss CW1 aTisch DJ1 aPomat W1 aKing CL1 aRobinson LJ1 aWalker M00aSafety and efficacy of mass drug administration with a single-dose triple-drug regimen of albendazole + diethylcarbamazine + ivermectin for lymphatic filariasis in Papua New Guinea: An open-label, cluster-randomised trial uhttps://journals.plos.org/plosntds/article/file?id=10.1371/journal.pntd.0010096&type=printable ae00100960 v163 a

Background Papua New Guinea (PNG) has a high burden of lymphatic filariasis (LF) caused by Wuchereria bancrofti, with an estimated 4.2 million people at risk of infection. A single co-administered dose of ivermectin, diethylcarbamazine and albendazole (IDA) has been shown to have superior efficacy in sustained clearance of microfilariae compared to diethylcarbamazine and albendazole (DA) in small clinical trials. A community-based cluster-randomised trial of DA versus IDA was conducted to compare the safety and efficacy of IDA and DA for LF in a moderately endemic, treatment-naive area in PNG.

Methodology All consenting, eligible residents of 24 villages in Bogia district, Madang Province, PNG were enrolled, screened for W. bancrofti antigenemia and microfilaria (Mf) and randomised to receive IDA (N = 2382) or DA (N = 2181) according to their village of residence. Adverse events (AE) were assessed by active follow-up for 2 days and passive follow-up for an additional 5 days. Antigen-positive participants were re-tested one year after MDA to assess treatment efficacy. Principal findings Of the 4,563 participants enrolled, 96% were assessed for AEs within 2 days after treatment. The overall frequency of AEs were similar after either DA (18%) or IDA (20%) treatment. For those individuals with AEs, 87% were mild (Grade 1), 13% were moderate (Grade 2) and there were no Grade 3, Grade 4, or serious AEs (SAEs). The frequency of AEs was greater in Mf-positive than Mf-negative individuals receiving IDA (39% vs 20% p<0.001) and in Mf-positive participants treated with IDA (39%), compared to those treated with DA (24%, p = 0.023). One year after treatment, 64% (645/1013) of participants who were antigen-positive at baseline were re-screened and 74% of these participants (475/645) remained antigen positive. Clearance of Mf was achieved in 97% (52/54) of infected individuals in the IDA arm versus 84% (56/67) of infected individuals in the DA arm (relative risk (RR) 1.15; 95% CI, 1.02 to 1.30; p = 0.019). Participants receiving DA treatment had a 4-fold higher likelihood of failing to clear Mf (RR 4.67 (95% CI: 1.05 to 20.67; p = 0.043). In the DA arm, a significant predictor of failure to clear was baseline Mf density (RR 1.54; 95% CI, 1.09 to 2.88; p = 0.007). Conclusion IDA was well tolerated and more effective than DA for clearing Mf. Widespread use of this regimen could accelerate LF elimination in PNG. Trial registration Registration number NCT02899936; https://clinicaltrials.gov/ct2/show/NCT02899936.

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