Factors contributing to delay in parasite clearance in uncomplicated falciparum malaria in children.

Abstract:

BACKGROUND:Drug resistance in Plasmodium falciparum is common in many endemic and other settings but there is no clear recommendation on when to change therapy when there is delay in parasite clearance after initiation of therapy in African children. METHODS:The factors contributing to delay in parasite clearance, defined as a clearance time > 2 d, in falciparum malaria were characterized in 2,752 prospectively studied children treated with anti-malarial drugs between 1996 and 2008. RESULTS:1,237 of 2,752 children (45%) had delay in parasite clearance. Overall 211 children (17%) with delay in clearance subsequently failed therapy and they constituted 72% of those who had drug failure, i.e., 211 of 291 children. The following were independent risk factors for delay in parasite clearance at enrolment: age less than or equal to 2 years (Adjusted odds ratio [AOR] = 2.13, 95% confidence interval [CI]1.44-3.15, P < 0.0001), presence of fever (AOR = 1.33, 95% CI = 1.04-1.69, P = 0.019), parasitaemia >50,000/ul (AOR = 2.21, 95% CI = 1.77-2.75, P < 0.0001), and enrolment before year 2000 (AOR= 1.55, 95% CI = 1.22-1.96, P < 0.0001). Following treatment, a body temperature >or= 38 degrees C and parasitaemia > 20000/microl a day after treatment began, were independent risk factors for delay in clearance. Non-artemisinin monotherapies were associated with delay in clearance and treatment failures, and in those treated with chloroquine or amodiaquine, with pfmdr 1/pfcrt mutants. Delay in clearance significantly increased gametocyte carriage (P < 0.0001). CONCLUSION:Delay in parasite clearance is multifactorial, is related to drug resistance and treatment failure in uncomplicated malaria and has implications for malaria control efforts in sub-Saharan Africa.

journal_name

Malar J

journal_title

Malaria journal

authors

Sowunmi A,Adewoye EO,Gbotsho GO,Happi CT,Sijuade A,Folarin OA,Okuboyejo TM,Michael OS

doi

10.1186/1475-2875-9-53

subject

Has Abstract

pub_date

2010-02-15 00:00:00

pages

53

issn

1475-2875

pii

1475-2875-9-53

journal_volume

9

pub_type

杂志文章
  • Zooprophylaxis or zoopotentiation: the outcome of introducing animals on vector transmission is highly dependent on the mosquito mortality while searching.

    abstract:BACKGROUND:Zooprophylaxis, the diversion of disease carrying insects from humans to animals, may reduce transmission of diseases such as malaria. However, as the number of animals increases, improved availability of blood meals may increase mosquito survival, thereby countering the impact of diverting feeds. METHODS:C...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-2-32

    authors: Saul A

    更新日期:2003-09-19 00:00:00

  • Primaquine ineligibility in anti-relapse therapy of Plasmodium vivax malaria: the problem of G6PD deficiency and cytochrome P-450 2D6 polymorphisms.

    abstract::The hypnozoite reservoir of Plasmodium vivax represents both the greatest obstacle and opportunity for ultimately eradicating this species. It is silent and cannot be diagnosed until it awakens and provokes a clinical attack with attendant morbidity, risk of mortality, and opportunities for onward transmission. The on...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-018-2190-z

    authors: Baird JK,Battle KE,Howes RE

    更新日期:2018-01-22 00:00:00

  • Frozen blood clots can be used for the diagnosis of distinct Plasmodium species in man and non-human primates from the Brazilian Atlantic Forest.

    abstract:BACKGROUND:Zoonotic infections with epidemic potential, as non-human primate malaria and yellow fever (YF), can overlap geographically. Optimizing a small blood sample for diagnosis and surveillance is of great importance. Blood are routinely collected for YF diagnosis and blood clots usually discarded after serum obte...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-018-2485-0

    authors: de Abreu FVS,Gomes LR,Mello ARL,Bianco-Júnior C,de Pina-Costa A,Dos Santos E,Teixeira DS,Brasil P,Daniel-Ribeiro CT,Lourenço-de-Oliveira R,de Fátima Ferreira-da-Cruz M

    更新日期:2018-09-24 00:00:00

  • Fast in vitro methods to determine the speed of action and the stage-specificity of anti-malarials in Plasmodium falciparum.

    abstract:BACKGROUND:Recent whole cell in vitro screening campaigns identified thousands of compounds that are active against asexual blood stages of Plasmodium falciparum at submicromolar concentrations. These hits have been made available to the public, providing many novel chemical starting points for anti-malarial drug disco...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-12-424

    authors: Le Manach C,Scheurer C,Sax S,Schleiferböck S,Cabrera DG,Younis Y,Paquet T,Street L,Smith P,Ding XC,Waterson D,Witty MJ,Leroy D,Chibale K,Wittlin S

    更新日期:2013-11-16 00:00:00

  • Geo-additive modelling of malaria in Burundi.

    abstract:BACKGROUND:Malaria is a major public health issue in Burundi in terms of both morbidity and mortality, with around 2.5 million clinical cases and more than 15,000 deaths each year. It is still the single main cause of mortality in pregnant women and children below five years of age. Because of the severe health and eco...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-10-234

    authors: Nkurunziza H,Gebhardt A,Pilz J

    更新日期:2011-08-11 00:00:00

  • It is time to rethink tactics in the fight against malaria.

    abstract::April 25 marks World Malaria Day, an opportunity for those who work to defeat the illness, to review progress and renew commitments. After a decade of steady success, this year's commemoration of the date is also an opportunity to reconsider current approaches and assess the state of the science needed to keep pace in...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-12-140

    authors: Slutsker L,Kachur SP

    更新日期:2013-04-24 00:00:00

  • Widespread distribution of Plasmodium vivax malaria in Mauritania on the interface of the Maghreb and West Africa.

    abstract:BACKGROUND:Plasmodium vivax is very rarely seen in West Africa, although specific detection methods are not widely applied in the region, and it is now considered to be absent from North Africa. However, this parasite species has recently been reported to account for most malaria cases in Nouakchott, the capital of Mau...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-016-1118-8

    authors: Ba H,Duffy CW,Ahouidi AD,Deh YB,Diallo MY,Tandia A,Conway DJ

    更新日期:2016-02-09 00:00:00

  • Factors affecting providers' delivery of intermittent preventive treatment for malaria in pregnancy: a five-country analysis of national service provision assessment surveys.

    abstract:BACKGROUND:Intermittent preventive treatment in pregnancy (IPTp) delivered during antenatal care (ANC) visits has been shown to be a highly efficacious and cost-effective intervention. Given the high rates of ANC attendance in sub-Saharan Africa, the current low IPTp coverage represents considerable missed opportunitie...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-13-440

    authors: Maheu-Giroux M,Castro MC

    更新日期:2014-11-20 00:00:00

  • A metabolomic analytical approach permits identification of urinary biomarkers for Plasmodium falciparum infection: a case-control study.

    abstract:BACKGROUND:Currently available diagnostic techniques of Plasmodium falciparum infection are not optimal for non-invasive, population-based screening for malaria. It was hypothesized that a mass spectrometry-based metabolomics approach could identify urinary biomarkers of falciparum malaria. METHODS:The study used a ca...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-017-1875-z

    authors: Abdelrazig S,Ortori CA,Davey G,Deressa W,Mulleta D,Barrett DA,Amberbir A,Fogarty AW

    更新日期:2017-05-30 00:00:00

  • Prospective strategies to delay the evolution of anti-malarial drug resistance: weighing the uncertainty.

    abstract:BACKGROUND:The evolution of drug resistance in malaria parasites highlights a need to identify and evaluate strategies that could extend the useful therapeutic life of anti-malarial drugs. Such strategies are deployed to best effect before resistance has emerged, under conditions of great uncertainty. METHODS:Here, th...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-217

    authors: Smith DL,Klein EY,McKenzie FE,Laxminarayan R

    更新日期:2010-07-23 00:00:00

  • Atovaquone-proguanil in the treatment of imported uncomplicated Plasmodium falciparum malaria: a prospective observational study of 553 cases.

    abstract:BACKGROUND:Each year, thousands of cases of uncomplicated malaria are imported into Europe by travellers. Atovaquone-proguanil (AP) has been one of the first-line regimens used in France for uncomplicated malaria for almost ten years. While AP's efficacy and tolerance were evaluated in several trials, its use in "real ...

    journal_title:Malaria journal

    pub_type: 杂志文章,多中心研究

    doi:10.1186/1475-2875-12-399

    authors: Cordel H,Cailhol J,Matheron S,Bloch M,Godineau N,Consigny PH,Gros H,Campa P,Bourée P,Fain O,Ralaimazava P,Bouchaud O

    更新日期:2013-11-07 00:00:00

  • Perceptions of malaria and acceptance of rapid diagnostic tests and related treatment practises among community members and health care providers in Greater Garissa, North Eastern Province, Kenya.

    abstract:BACKGROUND:Conventional diagnosis of malaria has relied upon either clinical diagnosis or microscopic examination of peripheral blood smears. These methods, if not carried out exactly, easily result in the over- or under-diagnosis of malaria. The reliability and accuracy of malaria RDTs, even in extremely challenging h...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-13-502

    authors: Diggle E,Asgary R,Gore-Langton G,Nahashon E,Mungai J,Harrison R,Abagira A,Eves K,Grigoryan Z,Soti D,Juma E,Allan R

    更新日期:2014-12-17 00:00:00

  • Knowledge, attitudes, and practices regarding malaria control among the slash and burn cultivators in Rangamati Hill tracts of Bangladesh.

    abstract:BACKGROUND:Slash and burn cultivators are a significant risk group for malaria in South-East Asia. As envisaged in the National Strategic Plan for Malaria Elimination, Bangladesh aims to achieve zero indigenous malaria transmission by 2030. For the national plan to move from malaria control to malaria elimination, targ...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-019-2849-0

    authors: Saha A,Sarker M,Kabir M,Lu G,Müller O

    更新日期:2019-06-25 00:00:00

  • Post-malaria neurological syndrome: four cases, review of the literature and clarification of the nosological framework.

    abstract:BACKGROUND:Post-malaria neurological syndrome (PMNS) is a debated entity, defined by neurological complications following a post-malaria symptom-free period and a negative blood smear. Four cases of PMNS are hereby reported and a review the literature performed to clarify the nosological framework of this syndrome. ME...

    journal_title:Malaria journal

    pub_type: 杂志文章,评审

    doi:10.1186/s12936-018-2542-8

    authors: Tamzali Y,Demeret S,Haddad E,Guillot H,Caumes E,Jauréguiberry S

    更新日期:2018-10-26 00:00:00

  • Randomized, controlled trial of the long term safety, immunogenicity and efficacy of RTS,S/AS02(D) malaria vaccine in infants living in a malaria-endemic region.

    abstract:BACKGROUND:The RTS,S/AS malaria candidate vaccine is being developed with the intent to be delivered, if approved, through the Expanded Programme on Immunization (EPI) of the World Health Organization. Safety, immunogenicity and efficacy of the RTS,S/AS02(D) vaccine candidate when integrated into a standard EPI schedul...

    journal_title:Malaria journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/1475-2875-12-11

    authors: Abdulla S,Salim N,Machera F,Kamata R,Juma O,Shomari M,Kubhoja S,Mohammed A,Mwangoka G,Aebi T,Mshinda H,Schellenberg D,Carter T,Villafana T,Dubois MC,Leach A,Lievens M,Vekemans J,Cohen J,Ballou WR,Tanner M

    更新日期:2013-01-08 00:00:00

  • Introducing rapid diagnostic tests for malaria into registered drug shops in Uganda: lessons learned and policy implications.

    abstract:BACKGROUND:Malaria is a major public health problem in Uganda and the current policy recommends introduction of rapid diagnostic tests for malaria (RDTs) to facilitate effective case management. However, provision of RDTs in drug shops potentially raises a new set of issues, such as adherence to RDTs results, managemen...

    journal_title:Malaria journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/s12936-015-0979-6

    authors: Mbonye AK,Clarke SE,Lal S,Chandler CI,Hutchinson E,Hansen KS,Magnussen P

    更新日期:2015-11-14 00:00:00

  • Active case detection, treatment of falciparum malaria with combined chloroquine and sulphadoxine/pyrimethamine and vivax malaria with chloroquine and molecular markers of anti-malarial resistance in the Republic of Vanuatu.

    abstract:BACKGROUND:Chloroquine-resistant Plasmodium falciparum was first described in the Republic of Vanuatu in the early 1980s. In 1991, the Vanuatu Ministry of Health instituted new treatment guidelines for uncomplicated P. falciparum infection consisting of chloroquine/sulphadoxine-pyrimethamine combination therapy. Chloro...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-89

    authors: Kinzer MH,Chand K,Basri H,Lederman ER,Susanti AI,Elyazar I,Taleo G,Rogers WO,Bangs MJ,Maguire JD

    更新日期:2010-04-06 00:00:00

  • Experience and challenges from clinical trials with malaria vaccines in Africa.

    abstract::Malaria vaccines are considered amongst the most important modalities for potential elimination of malaria disease and transmission. Research and development in this field has been an area of intense effort by many groups over the last few decades. Despite this, there is currently no licensed malaria vaccine. Research...

    journal_title:Malaria journal

    pub_type: 杂志文章,评审

    doi:10.1186/1475-2875-12-86

    authors: Mwangoka G,Ogutu B,Msambichaka B,Mzee T,Salim N,Kafuruki S,Mpina M,Shekalaghe S,Tanner M,Abdulla S

    更新日期:2013-03-04 00:00:00

  • Improving ability to identify malaria and correctly use chloroquine in children at household level in Nakonde District, Northern Province of Zambia.

    abstract::BACKGROUND: This study investigated causes of malaria and how cases were managed at household level, in order to improve the ability to identify malaria and ensure correct use of chloroquine. It was conducted in Nakonde District, Northern Province of Zambia, between 2000 and 2001. Nakonde district is in a hyperendemic...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-2-43

    authors: Kaona FA,Tuba M

    更新日期:2003-11-19 00:00:00

  • Biology and bionomics of malaria vectors in India: existing information and what more needs to be known for strategizing elimination of malaria.

    abstract::India has committed to eliminate malaria by 2030. The national framework for malaria elimination released by the Government of India plans to achieve this goal through strategic planning in a phased manner. Since vector control is a major component of disease management and vector elimination, it requires a thorough u...

    journal_title:Malaria journal

    pub_type: 杂志文章,评审

    doi:10.1186/s12936-019-3011-8

    authors: Subbarao SK,Nanda N,Rahi M,Raghavendra K

    更新日期:2019-12-03 00:00:00

  • Establishment of a self-propagating population of the African malaria vector Anopheles arabiensis under semi-field conditions.

    abstract:BACKGROUND:The successful control of insect disease vectors relies on a thorough understanding of their ecology and behaviour. However, knowledge of the ecology of many human disease vectors lags behind that of agricultural pests. This is partially due to the paucity of experimental tools for investigating their ecolog...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-9-356

    authors: Ng'habi KR,Mwasheshi D,Knols BG,Ferguson HM

    更新日期:2010-12-08 00:00:00

  • Challenging diagnosis of congenital malaria in non-endemic areas.

    abstract:BACKGROUND:Congenital malaria is usually defined as the detection of asexual forms of Plasmodium spp. in a blood sample of a neonate during perinatal age if there is no possibility of postpartum infection by a mosquito bite. The incidence of congenital malaria is highly variable and seems related to several factors, su...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-018-2614-9

    authors: Romani L,Pane S,Severini C,Menegon M,Foglietta G,Bernardi S,Tchidjou HK,Onetti Muda A,Palma P,Putignani L

    更新日期:2018-12-14 00:00:00

  • Travel patterns and demographic characteristics of malaria cases in Swaziland, 2010-2014.

    abstract:BACKGROUND:As Swaziland progresses towards national malaria elimination, the importation of parasites into receptive areas becomes increasingly important. Imported infections have the potential to instigate local transmission and sustain local parasite reservoirs. METHODS:Travel histories from Swaziland's routine surv...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-017-2004-8

    authors: Tejedor-Garavito N,Dlamini N,Pindolia D,Soble A,Ruktanonchai NW,Alegana V,Le Menach A,Ntshalintshali N,Dlamini B,Smith DL,Tatem AJ,Kunene S

    更新日期:2017-09-08 00:00:00

  • Identification and characterization of the merozoite surface protein 1 (msp1) gene in a host-generalist avian malaria parasite, Plasmodium relictum (lineages SGS1 and GRW4) with the use of blood transcriptome.

    abstract:BACKGROUND:The merozoite surface protein 1 (msp1) is one of the most studied vaccine candidate genes in mammalian Plasmodium spp. to have been used for investigations of epidemiology, population structures, and immunity to infections. However methodological difficulties have impeded the use of nuclear markers such as m...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-12-381

    authors: Hellgren O,Kutzer M,Bensch S,Valkiūnas G,Palinauskas V

    更新日期:2013-10-30 00:00:00

  • A rapid and scalable density gradient purification method for Plasmodium sporozoites.

    abstract:BACKGROUND:Malaria remains a major human health problem, with no licensed vaccine currently available. Malaria infections initiate when infectious Plasmodium sporozoites are transmitted by Anopheline mosquitoes during their blood meal. Investigations of the malaria sporozoite are, therefore, of clear medical importance...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-11-421

    authors: Kennedy M,Fishbaugher ME,Vaughan AM,Patrapuvich R,Boonhok R,Yimamnuaychok N,Rezakhani N,Metzger P,Ponpuak M,Sattabongkot J,Kappe SH,Hume JC,Lindner SE

    更新日期:2012-12-17 00:00:00

  • Prevalence of mutations in the Plasmodium falciparum chloroquine resistance transporter, PfCRT, and association with ex vivo susceptibility to common anti-malarial drugs against African Plasmodium falciparum isolates.

    abstract:BACKGROUND:The Plasmodium falciparum chloroquine transporter gene (pfcrt) is known to be involved in chloroquine and amodiaquine resistance, and more particularly the mutations on the loci 72 to 76 localized within the second exon. Additionally, new mutations (T93S, H97Y, C101F, F145I, M343L, C350R and G353V) were rece...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/s12936-020-03281-x

    authors: Foguim FT,Bogreau H,Gendrot M,Mosnier J,Fonta I,Benoit N,Amalvict R,Madamet M,Wein S,Pradines B,French National Reference Centre for Imported Malaria Study Group.

    更新日期:2020-06-05 00:00:00

  • State of malaria diagnostic testing at clinical laboratories in the United States, 2010: a nationwide survey.

    abstract:BACKGROUND:The diagnosis of malaria can be difficult in non-endemic areas, such as the United States, and delays in diagnosis and errors in treatment occur too often. METHODS:A nationwide survey of laboratories in the United States and its nine dependent territories was conducted in 2010 to determine factors that may ...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-10-340

    authors: Abanyie FA,Arguin PM,Gutman J

    更新日期:2011-11-10 00:00:00

  • Multiple insecticide resistance mechanisms involving metabolic changes and insensitive target sites selected in anopheline vectors of malaria in Sri Lanka.

    abstract:BACKGROUND:The current status of insecticide resistance and the underlying resistance mechanisms were studied in the major vector of malaria, Anopheles culicifacies, and the secondary vector, Anopheles subpictus in five districts (Anuradhapura, Kurunegala, Moneragala, Puttalam and Trincomalee) of Sri Lanka. Eight other...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-7-168

    authors: Perera MD,Hemingway J,Karunaratne SP

    更新日期:2008-08-28 00:00:00

  • Using rapid diagnostic tests as source of malaria parasite DNA for molecular analyses in the era of declining malaria prevalence.

    abstract:BACKGROUND:Malaria prevalence has recently declined markedly in many parts of Tanzania and other sub-Saharan African countries due to scaling-up of control interventions including more efficient treatment regimens (e.g. artemisinin-based combination therapy) and insecticide-treated bed nets. Although continued molecula...

    journal_title:Malaria journal

    pub_type: 杂志文章

    doi:10.1186/1475-2875-10-6

    authors: Ishengoma DS,Lwitiho S,Madebe RA,Nyagonde N,Persson O,Vestergaard LS,Bygbjerg IC,Lemnge MM,Alifrangis M

    更新日期:2011-01-12 00:00:00

  • Therapeutic efficacy of artemether-lumefantrine in uncomplicated falciparum malaria in India.

    abstract:BACKGROUND:Artemisinin-based combination therapy (ACT) is the treatment of choice for uncomplicated falciparum malaria. Artemether-lumefantrine (AL), a fixed dose co-formulation, has recently been approved for marketing in India, although it is not included in the National Drug Policy for treatment of malaria. Efficacy...

    journal_title:Malaria journal

    pub_type: 临床试验,杂志文章

    doi:10.1186/1475-2875-8-107

    authors: Valecha N,Srivastava P,Mohanty SS,Mittra P,Sharma SK,Tyagi PK,Pradhan K,Dev V,Singh R,Dash AP,Sharma YD

    更新日期:2009-05-19 00:00:00