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Impact of seven rounds of mass administration of diethylcarbamazine and ivermectin on prevalence of chronic lymphatic filariasis in south India

Identifieur interne : 000401 ( PascalFrancis/Corpus ); précédent : 000400; suivant : 000402

Impact of seven rounds of mass administration of diethylcarbamazine and ivermectin on prevalence of chronic lymphatic filariasis in south India

Auteurs : J. Yuvaraj ; S. P. Pani ; P. Vanamail ; K. D. Ramaiah ; P. K. Das

Source :

RBID : Pascal:08-0227645

Descripteurs français

English descriptors

Abstract

OBJECTIVE To evaluate the impact of seven rounds of mass administration of diethylcarbamazine (DEC) and ivermectin on the prevalence of chronic lymphatic filariasis and to compare it with that observed in a placebo arm in a community-level trial. METHODS Cross-sectional clinical surveys were carried out before and after seven rounds of mass drug administration (MDA). About 54-75% of the target population were treated at each round of MDA. RESULTS After seven rounds, the hydrocele prevalence had declined from the pre-intervention level of 20.5-5.1% (P < 0.05) in the DEC arm, from 23.9% to 10.4% (P < 0.05) in the ivermectin arm and from 20.4% to 10.9% (P < 0.05) in the placebo arm, equivalent to reductions of 75.3%, 56.6% and 46.6%, respectively. The lymphoedema/elephantiasis prevalence declined only marginally and without statistical significance from 3.7% to 3.2%, 4.6% to 3.9% and 2.9% to 2.3% in the DEC, ivermectin and placebo arm. After the seventh MDA, none of the sampled people in the 0-20 age group was found with hydrocele and there was a statistically significant decline in hydrocele prevalence in all other age groups in the communities treated with DEC, the drug known to have macrofilaricidal effect. The impact was relatively less in ivermectin arm. CONCLUSION Repeated DEC administration has the potential to prevent incidence of new hydrocele cases and may resolve the manifestation at least in a proportion of affected people. Apart from reducing the microfilaraemia prevalence and transmission of infection, MDA also results in significant public health benefits by reducing the burden of hydrocele in treated communities.

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Pour connaître la documentation sur le format Inist Standard.

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A11 01  1    @1 YUVARAJ (J.)
A11 02  1    @1 PANI (S. P.)
A11 03  1    @1 VANAMAIL (P.)
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C01 01    ENG  @0 OBJECTIVE To evaluate the impact of seven rounds of mass administration of diethylcarbamazine (DEC) and ivermectin on the prevalence of chronic lymphatic filariasis and to compare it with that observed in a placebo arm in a community-level trial. METHODS Cross-sectional clinical surveys were carried out before and after seven rounds of mass drug administration (MDA). About 54-75% of the target population were treated at each round of MDA. RESULTS After seven rounds, the hydrocele prevalence had declined from the pre-intervention level of 20.5-5.1% (P < 0.05) in the DEC arm, from 23.9% to 10.4% (P < 0.05) in the ivermectin arm and from 20.4% to 10.9% (P < 0.05) in the placebo arm, equivalent to reductions of 75.3%, 56.6% and 46.6%, respectively. The lymphoedema/elephantiasis prevalence declined only marginally and without statistical significance from 3.7% to 3.2%, 4.6% to 3.9% and 2.9% to 2.3% in the DEC, ivermectin and placebo arm. After the seventh MDA, none of the sampled people in the 0-20 age group was found with hydrocele and there was a statistically significant decline in hydrocele prevalence in all other age groups in the communities treated with DEC, the drug known to have macrofilaricidal effect. The impact was relatively less in ivermectin arm. CONCLUSION Repeated DEC administration has the potential to prevent incidence of new hydrocele cases and may resolve the manifestation at least in a proportion of affected people. Apart from reducing the microfilaraemia prevalence and transmission of infection, MDA also results in significant public health benefits by reducing the burden of hydrocele in treated communities.
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Format Inist (serveur)

NO : PASCAL 08-0227645 INIST
ET : Impact of seven rounds of mass administration of diethylcarbamazine and ivermectin on prevalence of chronic lymphatic filariasis in south India
AU : YUVARAJ (J.); PANI (S. P.); VANAMAIL (P.); RAMAIAH (K. D.); DAS (P. K.)
AF : Vector Control Research Centre/Pondicherry/Inde (1 aut., 2 aut., 3 aut., 4 aut., 5 aut.)
DT : Publication en série; Niveau analytique
SO : TM & IH. Tropical medicine & international health; ISSN 1360-2276; Royaume-Uni; Da. 2008; Vol. 13; No. 5; Pp. 737-742; Bibl. 1/2 p.
LA : Anglais
EA : OBJECTIVE To evaluate the impact of seven rounds of mass administration of diethylcarbamazine (DEC) and ivermectin on the prevalence of chronic lymphatic filariasis and to compare it with that observed in a placebo arm in a community-level trial. METHODS Cross-sectional clinical surveys were carried out before and after seven rounds of mass drug administration (MDA). About 54-75% of the target population were treated at each round of MDA. RESULTS After seven rounds, the hydrocele prevalence had declined from the pre-intervention level of 20.5-5.1% (P < 0.05) in the DEC arm, from 23.9% to 10.4% (P < 0.05) in the ivermectin arm and from 20.4% to 10.9% (P < 0.05) in the placebo arm, equivalent to reductions of 75.3%, 56.6% and 46.6%, respectively. The lymphoedema/elephantiasis prevalence declined only marginally and without statistical significance from 3.7% to 3.2%, 4.6% to 3.9% and 2.9% to 2.3% in the DEC, ivermectin and placebo arm. After the seventh MDA, none of the sampled people in the 0-20 age group was found with hydrocele and there was a statistically significant decline in hydrocele prevalence in all other age groups in the communities treated with DEC, the drug known to have macrofilaricidal effect. The impact was relatively less in ivermectin arm. CONCLUSION Repeated DEC administration has the potential to prevent incidence of new hydrocele cases and may resolve the manifestation at least in a proportion of affected people. Apart from reducing the microfilaraemia prevalence and transmission of infection, MDA also results in significant public health benefits by reducing the burden of hydrocele in treated communities.
CC : 002B01; 002B05E03B4D; 002B12B04
FD : Diéthylcarbamazine; Ivermectine; Filariose lymphatique; Maladie chronique; Lymphoedème; Hydrocèle; Campagne de masse; Prévalence; Chronique; Sud; Inde; Médicament; Médecine tropicale; Antiparasitaire; Anthelminthique; Epanchement
FG : Nématodose; Helminthiase; Parasitose; Infection; Asie; Lactone; Macrocycle; Pathologie des vaisseaux lymphatiques; Pathologie de l'appareil circulatoire; Pathologie de l'appareil génital mâle; Pathologie du testicule
ED : Diethylcarbamazine; Ivermectin; Lymphatic filariasis; Chronic disease; Lymphedema; Hydrocele; Mass campaign; Prevalence; Chronic; South; India; Drug; Tropical medicine; Parasiticide; Anthelmintic; Effusion
EG : Nematode disease; Helminthiasis; Parasitosis; Infection; Asia; Lactone; Macrocycle; Lymphatic vessel disease; Cardiovascular disease; Male genital diseases; Testicular diseases
SD : Dietilcarbamazina; Ivermectina; Filariasis linfática; Enfermedad crónica; Linfedema; Hidrocele; Campaña de población; Prevalencia; Crónico; Sur; India; Medicamento; Medicina tropical; Antiparasitario; Antihelmíntico; Derrame
LO : INIST-26295.354000172757520170
ID : 08-0227645

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<div type="abstract" xml:lang="en">OBJECTIVE To evaluate the impact of seven rounds of mass administration of diethylcarbamazine (DEC) and ivermectin on the prevalence of chronic lymphatic filariasis and to compare it with that observed in a placebo arm in a community-level trial. METHODS Cross-sectional clinical surveys were carried out before and after seven rounds of mass drug administration (MDA). About 54-75% of the target population were treated at each round of MDA. RESULTS After seven rounds, the hydrocele prevalence had declined from the pre-intervention level of 20.5-5.1% (P < 0.05) in the DEC arm, from 23.9% to 10.4% (P < 0.05) in the ivermectin arm and from 20.4% to 10.9% (P < 0.05) in the placebo arm, equivalent to reductions of 75.3%, 56.6% and 46.6%, respectively. The lymphoedema/elephantiasis prevalence declined only marginally and without statistical significance from 3.7% to 3.2%, 4.6% to 3.9% and 2.9% to 2.3% in the DEC, ivermectin and placebo arm. After the seventh MDA, none of the sampled people in the 0-20 age group was found with hydrocele and there was a statistically significant decline in hydrocele prevalence in all other age groups in the communities treated with DEC, the drug known to have macrofilaricidal effect. The impact was relatively less in ivermectin arm. CONCLUSION Repeated DEC administration has the potential to prevent incidence of new hydrocele cases and may resolve the manifestation at least in a proportion of affected people. Apart from reducing the microfilaraemia prevalence and transmission of infection, MDA also results in significant public health benefits by reducing the burden of hydrocele in treated communities.</div>
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<s0>OBJECTIVE To evaluate the impact of seven rounds of mass administration of diethylcarbamazine (DEC) and ivermectin on the prevalence of chronic lymphatic filariasis and to compare it with that observed in a placebo arm in a community-level trial. METHODS Cross-sectional clinical surveys were carried out before and after seven rounds of mass drug administration (MDA). About 54-75% of the target population were treated at each round of MDA. RESULTS After seven rounds, the hydrocele prevalence had declined from the pre-intervention level of 20.5-5.1% (P < 0.05) in the DEC arm, from 23.9% to 10.4% (P < 0.05) in the ivermectin arm and from 20.4% to 10.9% (P < 0.05) in the placebo arm, equivalent to reductions of 75.3%, 56.6% and 46.6%, respectively. The lymphoedema/elephantiasis prevalence declined only marginally and without statistical significance from 3.7% to 3.2%, 4.6% to 3.9% and 2.9% to 2.3% in the DEC, ivermectin and placebo arm. After the seventh MDA, none of the sampled people in the 0-20 age group was found with hydrocele and there was a statistically significant decline in hydrocele prevalence in all other age groups in the communities treated with DEC, the drug known to have macrofilaricidal effect. The impact was relatively less in ivermectin arm. CONCLUSION Repeated DEC administration has the potential to prevent incidence of new hydrocele cases and may resolve the manifestation at least in a proportion of affected people. Apart from reducing the microfilaraemia prevalence and transmission of infection, MDA also results in significant public health benefits by reducing the burden of hydrocele in treated communities.</s0>
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<s5>37</s5>
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<s0>Macrocycle</s0>
<s5>38</s5>
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<s0>Macrocycle</s0>
<s5>38</s5>
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<s5>38</s5>
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<s5>39</s5>
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<s5>39</s5>
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<s5>39</s5>
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<s5>40</s5>
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<s5>40</s5>
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<s5>40</s5>
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<s5>41</s5>
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<s5>41</s5>
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<s5>41</s5>
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<s0>Pathologie du testicule</s0>
<s5>42</s5>
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<NO>PASCAL 08-0227645 INIST</NO>
<ET>Impact of seven rounds of mass administration of diethylcarbamazine and ivermectin on prevalence of chronic lymphatic filariasis in south India</ET>
<AU>YUVARAJ (J.); PANI (S. P.); VANAMAIL (P.); RAMAIAH (K. D.); DAS (P. K.)</AU>
<AF>Vector Control Research Centre/Pondicherry/Inde (1 aut., 2 aut., 3 aut., 4 aut., 5 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>TM & IH. Tropical medicine & international health; ISSN 1360-2276; Royaume-Uni; Da. 2008; Vol. 13; No. 5; Pp. 737-742; Bibl. 1/2 p.</SO>
<LA>Anglais</LA>
<EA>OBJECTIVE To evaluate the impact of seven rounds of mass administration of diethylcarbamazine (DEC) and ivermectin on the prevalence of chronic lymphatic filariasis and to compare it with that observed in a placebo arm in a community-level trial. METHODS Cross-sectional clinical surveys were carried out before and after seven rounds of mass drug administration (MDA). About 54-75% of the target population were treated at each round of MDA. RESULTS After seven rounds, the hydrocele prevalence had declined from the pre-intervention level of 20.5-5.1% (P < 0.05) in the DEC arm, from 23.9% to 10.4% (P < 0.05) in the ivermectin arm and from 20.4% to 10.9% (P < 0.05) in the placebo arm, equivalent to reductions of 75.3%, 56.6% and 46.6%, respectively. The lymphoedema/elephantiasis prevalence declined only marginally and without statistical significance from 3.7% to 3.2%, 4.6% to 3.9% and 2.9% to 2.3% in the DEC, ivermectin and placebo arm. After the seventh MDA, none of the sampled people in the 0-20 age group was found with hydrocele and there was a statistically significant decline in hydrocele prevalence in all other age groups in the communities treated with DEC, the drug known to have macrofilaricidal effect. The impact was relatively less in ivermectin arm. CONCLUSION Repeated DEC administration has the potential to prevent incidence of new hydrocele cases and may resolve the manifestation at least in a proportion of affected people. Apart from reducing the microfilaraemia prevalence and transmission of infection, MDA also results in significant public health benefits by reducing the burden of hydrocele in treated communities.</EA>
<CC>002B01; 002B05E03B4D; 002B12B04</CC>
<FD>Diéthylcarbamazine; Ivermectine; Filariose lymphatique; Maladie chronique; Lymphoedème; Hydrocèle; Campagne de masse; Prévalence; Chronique; Sud; Inde; Médicament; Médecine tropicale; Antiparasitaire; Anthelminthique; Epanchement</FD>
<FG>Nématodose; Helminthiase; Parasitose; Infection; Asie; Lactone; Macrocycle; Pathologie des vaisseaux lymphatiques; Pathologie de l'appareil circulatoire; Pathologie de l'appareil génital mâle; Pathologie du testicule</FG>
<ED>Diethylcarbamazine; Ivermectin; Lymphatic filariasis; Chronic disease; Lymphedema; Hydrocele; Mass campaign; Prevalence; Chronic; South; India; Drug; Tropical medicine; Parasiticide; Anthelmintic; Effusion</ED>
<EG>Nematode disease; Helminthiasis; Parasitosis; Infection; Asia; Lactone; Macrocycle; Lymphatic vessel disease; Cardiovascular disease; Male genital diseases; Testicular diseases</EG>
<SD>Dietilcarbamazina; Ivermectina; Filariasis linfática; Enfermedad crónica; Linfedema; Hidrocele; Campaña de población; Prevalencia; Crónico; Sur; India; Medicamento; Medicina tropical; Antiparasitario; Antihelmíntico; Derrame</SD>
<LO>INIST-26295.354000172757520170</LO>
<ID>08-0227645</ID>
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