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1.
BMC Complement Altern Med ; 19(1): 265, 2019 Oct 11.
Artigo em Inglês | MEDLINE | ID: mdl-31601215

RESUMO

BACKGROUND: Carica papaya (CP) extract is becoming popular as an unlicensed herbal remedy purported to hasten recovery in dengue infection, mostly based on observations that it may increase platelet counts. This systematic review and meta-analysis aims to critically analyze the evidence from controlled clinical trials on the efficacy and safety of CP extract in the treatment of dengue infection. METHODS: PubMed, LILACS and Google Scholar were searched for randomized or non-randomized trials enrolling patients with suspected or confirmed dengue where CP extract was compared, as a treatment measure, against standard treatment. Recovery of platelet counts as well as other clinical indicators of favourable outcome (duration of hospital stay, prevention of plasma leakage, life threatening complications, and mortality) were assessed. RESULTS: Nine studies (India-6, Pakistan-1, Indonesia-1, Malaysia-1) met the inclusion criteria. Seven studies showed an increase in platelet counts in patients receiving CP extract, while one study showed no significant difference between the two groups, and direct comparison was not possible in the remaining study. Serious adverse events were not reported. CP extract may reduce the duration of hospital stay (mean difference - 1.98 days, 95% confidence interval - 1.83 to - 2.12, 3 studies, 580 participants, low quality evidence), and cause improvement in mean platelet counts between the first and fifth day of treatment (mean difference 35.45, 95% confidence interval 23.74 to 47.15, 3 studies, 129 participants, low quality evidence). No evidence was available regarding other clinical outcomes. CONCLUSIONS: The clinical value of improvement in platelet count or early discharge is unclear in the absence of more robust indicators of favourable clinical outcome. Current evidence is insufficient to comment on the role of CP extract in dengue. There is a need for further well designed clinical trials examining the effect of CP on platelet counts, plasma leakage, other serious manifestations of dengue, and mortality, with clearly defined outcome measures.


Assuntos
Antivirais/administração & dosagem , Carica/química , Dengue/tratamento farmacológico , Extratos Vegetais/administração & dosagem , Antivirais/química , Ensaios Clínicos como Assunto , Dengue/virologia , Humanos , Extratos Vegetais/química , Folhas de Planta/química
2.
Malar J ; 15: 144, 2016 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-26955813

RESUMO

BACKGROUND: Sri Lanka is a malaria-free country. However it remains surrounded by countries with endemic malaria transmission. Since the last indigenous case of malaria was reported in October 2012, only imported malaria cases have been diagnosed with 36 cases detected in 2015, which includes 17 cases each of Plasmodium vivax and Plasmodium falciparum and two cases of Plasmodium ovale. METHODS: This study investigated the knowledge and practices regarding malaria chemoprophylaxis among all the Sri Lankan security forces personnel returning from peacekeeping missions in malaria endemic countries over a 7 month period. Adherence to other malaria prevention measures, occurrence of adverse events and incident cases of malaria were also recorded maintaining the anonymity of the respondents. Potential associations for non-compliance were studied. RESULTS: Interviews were carried out with 559 security forces personnel returning home from foreign deployments in malaria-endemic regions (males: 550, 98.4 %). The majority (553, 98.9 %) was well aware of the need for chemoprophylaxis during the overseas stay and its regular use as prescribed. The overall adherence to chemoprophylaxis was good with 78.7 % (440/559) reporting regular, as prescribed, use. Having better educational qualifications, being female, being prescribed mefloquine, having fever during deployment and belonging to a security force other than the army were significantly associated with poor compliance (p < 0.05). CONCLUSIONS: The study reveals that knowledge regarding malaria chemoprophylaxis among Sri Lankan security forces personnel serving abroad was good, a fact that may have contributed to absence/extremely low incidence of malaria during deployment.


Assuntos
Antimaláricos/uso terapêutico , Malária , Militares/estatística & dados numéricos , Quimioprevenção , Estudos Transversais , Feminino , Humanos , Malária/tratamento farmacológico , Malária/epidemiologia , Malária/prevenção & controle , Masculino , Risco , Sri Lanka/epidemiologia , Viagem
3.
Malar J ; 15(1): 504, 2016 Oct 18.
Artigo em Inglês | MEDLINE | ID: mdl-27756307

RESUMO

BACKGROUND: Sri Lanka is currently in the prevention of re-introduction phase of malaria. The engagement of the private sector health care institutions in malaria surveillance is important. The purpose of the study was to determine the number of diagnostic tests carried out, the number of positive cases identified and the referral system for diagnosis in the private sector and to estimate the costs involved. METHODS: This prospective study of private sector laboratories within the Colombo District of Sri Lanka was carried out over a 6-month period in 2015. The management of registered private sector laboratories was contacted individually and the purpose of the study was explained. A reporting format was developed and introduced for monthly reporting. RESULTS: Forty-one laboratories were eligible to be included in the study and 28 participated by reporting data on a monthly basis. Excluding blood bank samples and routine testing for foreign employment, malaria diagnostic tests were carried out on 973 individuals during the 6-month period and nine malaria cases were identified. In 2015, a total of 36 malaria cases were reported from Sri Lanka. Of these, 24 (67 %) were diagnosed in the Colombo District and 50 % of them were diagnosed in private hospitals. CONCLUSIONS: An equal number of cases were diagnosed from the private sector and government sector in the Colombo District in 2015. The private sector being a major contributor in the detection of imported malaria cases in the country should be actively engaged in the national malaria surveillance system.


Assuntos
Transmissão de Doença Infecciosa/prevenção & controle , Malária/diagnóstico , Malária/prevenção & controle , Setor Privado , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Testes Diagnósticos de Rotina/economia , Testes Diagnósticos de Rotina/estatística & dados numéricos , Feminino , Custos de Cuidados de Saúde , Humanos , Lactente , Recém-Nascido , Malária/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Sri Lanka/epidemiologia , Adulto Jovem
4.
Ann Clin Microbiol Antimicrob ; 14: 2, 2015 Jan 16.
Artigo em Inglês | MEDLINE | ID: mdl-25591623

RESUMO

Leptospirosis is a zoonotic spirochaetal illness that is endemic in many tropical countries. The research base on leptospirosis is not as strong as other tropical infections such as malaria. However, it is a lethal infection that can attack many vital organs in its severe form, leading to multi-organ dysfunction syndrome and death. There are many gaps in knowledge regarding the pathophysiology of leptospirosis and the role of host immunity in causing symptoms. This hinders essential steps in combating disease, such as developing a potential vaccine. Another major problem with leptospirosis is the lack of an easy to perform, accurate diagnostic tests. Many clinicians in resource limited settings resort to clinical judgment in diagnosing leptospirosis. This is unfortunate, as many other diseases such as dengue, hanta virus, rickettsial infections, and even severe bacterial sepsis, can mimic leptospirosis. Another interesting problem is the prediction of disease severity at the onset of the illness. The majority of patients recover from leptospirosis with only a mild febrile illness, while a few others have severe illness with multi-organ failure. Clinical features are poor predictors of potential severity of infection, and therefore the search is on for potential biomarkers that can serve as early warnings for severe disease. This review concentrates on these three important aspects of this neglected tropical disease: diagnostics, developing a vaccine, and potential biomarkers to predict disease severity.


Assuntos
Vacinas Bacterianas/imunologia , Técnicas Genéticas , Imunoensaio/métodos , Leptospira/genética , Leptospirose/diagnóstico , Animais , Vacinas Bacterianas/genética , Biomarcadores/sangue , Humanos , Leptospira/imunologia , Leptospira/isolamento & purificação , Leptospirose/sangue , Leptospirose/imunologia , Leptospirose/microbiologia
5.
Cochrane Database Syst Rev ; (4): CD010458, 2015 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-25921416

RESUMO

BACKGROUND: Plasmodium vivax malaria is widespread, and the persistent liver stage causes relapse of the disease which contributes to continued P. vivax transmission. Primaquine is currently the only drug that cures the parasite liver stage, but requires 14 days to be effective and can cause haemolysis in people with glucose-6-phosphate dehydrogenase (G6PD) deficiency. In addition, there is some evidence of parasite resistance to the drug. Tafenoquine is a new alternative with a longer half-life. OBJECTIVES: To assess the effects of tafenoquine in people with P. vivax infection. SEARCH METHODS: We searched the following databases up to 13 April 2015: the Cochrane Infectious Diseases Group Specialized Register; the Cochrane Central Register of Controlled Trials (CENTRAL), published in The Cochrane Library; MEDLINE; EMBASE; CINAHL; SCOPUS; and LILACS. We also searched the World Health Organization (WHO) International Clinical Trial Registry Platform and the metaRegister of Controlled Trials (mRCT) for ongoing trials using "tafenoquine" and "malaria" as search terms up to 13 April 2015. SELECTION CRITERIA: Randomized controlled trials (RCTs) in people with P. vivax malaria. Adverse effects of tafenoquine are assessed in populations where people with G6PD deficiency have been excluded, and in populations without screening for G6PD deficiency. DATA COLLECTION AND ANALYSIS: All review authors independently extracted data and assessed trial quality. Meta-analysis was carried out where appropriate, and estimates given as relative risk with 95% confidence intervals. We assessed the quality of the evidence using the GRADE approach. MAIN RESULTS: Three RCTs met our inclusion criteria, with the asexual infection in both the tafenoquine and comparator arm treated with chloroquine, and in all trials G6PD deficiency patients were excluded. Tafenoquine dose comparisonsThree of the included trials compared eight different dosing regimens. Tafenoquine doses of 300 mg and above resulted in fewer relapses than no hypnozoite treatment over six months follow-up in adults (300 mg single dose: RR 0.19, 95% CI 0.08 to 0.41, one trial, 110 participants, moderate quality evidence; 500 to 600 mg single dose: RR 0.14, 95%CI 0.06 to 0.34, two trials, 122 participants, moderate quality evidence; 1800 mg to 3000 mg in divided doses: RR 0.05, 95% CI 0.01 to 0.23, two trials, 63 participants, low quality evidence).In people with normal G6PD status, there may be little or no difference in serious adverse events (three trials, 358 participants, low quality evidence); or any adverse event (one trial, 272 participants, low quality evidence). Tafenoquine versus primaquine Two of the included trials compared four different dosing regimens of tafenoquine against the standard primaquine regimen of 15 mg/day for 14 days. A single tafenoquine dose of 600 mg may be more effective than primaquine in relation to relapses at six months follow-up (RR 0.29, 95% CI 0.10 to 0.84, two trials, 98 participants, low quality evidence)In people with normal G6PD status, there may be little or no difference for serious adverse events (two trials, 323 participants, low quality evidence) or any adverse event (two trials, 323 participants, low quality evidence) between tafenoquine and primaquine. AUTHORS' CONCLUSIONS: Tafenoquine prevents relapses after clinically and parasitologically confirmed P. vivax malaria. The drug is untested in pregnancy, children and in G6PD-deficient people. The shorter treatment course is an important practical advantage in people who do not have G6PD deficiency, but the longer half-life may have more substantive consequences if given inadvertently to people with G6PD deficiency.


Assuntos
Aminoquinolinas/administração & dosagem , Antimaláricos/administração & dosagem , Malária Vivax/tratamento farmacológico , Prevenção Primária , Adulto , Aminoquinolinas/efeitos adversos , Antimaláricos/efeitos adversos , Deficiência de Glucosefosfato Desidrogenase/complicações , Humanos , Primaquina/administração & dosagem , Ensaios Clínicos Controlados Aleatórios como Assunto , Recidiva
6.
Malar J ; 13: 186, 2014 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-24885972

RESUMO

BACKGROUND: With the aim of eliminating malaria from Sri Lanka by 2014, the Anti-Malaria Campaign of Sri Lanka (AMC) sought the support of Tropical and Environmental Disease and Health Associates Private Limited (TEDHA), a private sector organization. In 2009, TEDHA was assigned 43 government hospitals in the district of Mannar in the Northern Province and in districts of Trincomalee, Batticaloa and Ampara in the Eastern Province to carry out malaria surveillance to complement the surveillance activities of the AMC. Passive case detection (PCD), activated passive case detection (APCD) and active case detection (ACD) for malaria have been routinely carried out in Sri Lanka. METHODS: The active case detection programme of TEDHA involves screening of populations irrespective of the presence of fever or any other signs or symptoms of malaria to detect infections and residual parasite carriers. ACD is done by TEDHA in a) high risk populations through mobile malaria clinics including armed forces personnel and b) pregnant females who visit antenatal clinics for asymptomatic malaria infections during the first trimester of pregnancy. Populations are selected in consultation with the Regional Malaria Officer of the AMC thus avoiding any overlap with the population screened by the government. RESULTS: TEDHA screened 387,309 individuals in the four districts for malaria by ACD including high risk groups and pregnant women between January 2010 and December 2012. During this period seven individuals were diagnosed with Plasmodium vivax infections and one individual was detected with a mixed infection of P. vivax and Plasmodium falciparum. All eight cases were detected by ACD carried out by mobile malaria clinics among high risk groups in the Mannar district. CONCLUSION: The progress made by Sri Lanka in the malaria elimination drive is largely due to increased surveillance and judicious use of control methods which has resulted in zero indigenous malaria cases being reported since October 2012. ACD played a major role in interrupting malaria transmission in the country.


Assuntos
Erradicação de Doenças , Malária Falciparum/diagnóstico , Malária Falciparum/prevenção & controle , Malária Vivax/diagnóstico , Malária Vivax/prevenção & controle , Programas de Rastreamento/métodos , Adolescente , Adulto , Criança , Pré-Escolar , Coinfecção/diagnóstico , Coinfecção/epidemiologia , Feminino , Humanos , Incidência , Lactente , Recém-Nascido , Malária Falciparum/epidemiologia , Malária Vivax/epidemiologia , Masculino , Pessoa de Meia-Idade , Gravidez , Sri Lanka/epidemiologia , Adulto Jovem
7.
BMC Pediatr ; 11: 44, 2011 May 26.
Artigo em Inglês | MEDLINE | ID: mdl-21615887

RESUMO

BACKGROUND: Tuberculosis. toxocariasis and toxoplasmosis are among the common infectious causes of lymphadenitis in children. Cases of Toxoplasma gondii and Toxocara spp co-infection have been reported. CASE PRESENTATION: This case report describes a co-infection of Toxoplasma gondii, Toxocara spp and tuberculosis in a child with chronic lymphadenopathy and eosinophilia. CONCLUSION: The case report highlights two important points. First is the diagnostic challenges that are encountered by clinicians in tropical countries such as Sri Lanka, where lymphadenopathy and eosinophilia with a positive serology commonly point towards a parasitic infection. Secondly the importance of proper history taking and performing the Mantoux test as a first line investigation in a country where the incidence of tuberculosis is low, even in the absence of a positive contact history.


Assuntos
Eosinofilia/diagnóstico , Doenças Linfáticas/diagnóstico , Toxocaríase/parasitologia , Toxoplasmose/parasitologia , Tuberculose/microbiologia , Animais , Pré-Escolar , Comorbidade , Eosinofilia/microbiologia , Eosinofilia/parasitologia , Humanos , Doenças Linfáticas/microbiologia , Doenças Linfáticas/parasitologia , Masculino , Sri Lanka , Toxocara/imunologia , Toxocara/isolamento & purificação , Toxocaríase/complicações , Toxoplasma/imunologia , Toxoplasma/isolamento & purificação , Toxoplasmose/complicações , Tuberculose/complicações
8.
Patient Prefer Adherence ; 14: 2215-2223, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33204072

RESUMO

BACKGROUND: Chemoprophylaxis is an effective tool for individuals to minimize their risk of contracting malaria and serves an important public health role in preventing imported malaria. Yet, it is only effective if the traveller is fully compliant with the prescribed regimen. For many destinations, a choice of prophylactic agents is available, so historical compliance data can be helpful for both physicians and travellers to make an informed decision. METHODS: We analyzed the historical self-reported compliance data for six chemoprophylactic agents currently recommended by CDC for primary malaria chemoprophylaxis by searching PubMed, Embase, CINAHL, Web of Science, and Scopus for observational studies reporting on travelers within the last 25 years. The quality of data was graded as "good" or "poor" using the NIH quality assessment tool for cohort and cross-sectional studies. Cumulative compliance data were compiled for all studies (gross compliance) and the subgroup of studies with "good" quality evidence (refined compliance). Subgroup analyses were performed for weekly vs daily administered regimens, between military and civilian travelers, and across each prophylactic agent. RESULTS: Twenty-four eligible studies assessed compliance for mefloquine (n=20), atovaquone-proguanil (n=11), doxycycline (n=13), and chloroquine (n=3). No studies were found for primaquine or tafenoquine. Both gross and refined compliance were significantly better for weekly regimens than daily regimens (P<0.0001). Stopping chemoprophylaxis due to adverse events was significantly more for doxycycline (P<0.0001) compared to other drugs. Compliance was significantly worse in military travelers, but they were also more likely to be prescribed doxycycline. CONCLUSION: Malaria chemoprophylaxis for a traveler should depend on prevailing resistance patterns at destination, current national guidelines, and patient preferences. However, when there is a choice, historical compliance data are useful to select a regimen that the traveler is more likely to comply with.

9.
PLoS Negl Trop Dis ; 14(5): e0008309, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32428003

RESUMO

Leptospirosis is endemic in Sri Lanka. There is a need for updated seroprevalence studies in endemic areas, to improve the understanding of disease dynamics, risk factors, control methods, and for clinical diagnosis. The cut-off titres for the microscopic agglutination test (MAT) for diagnosis of acute leptospirosis depend on community seroprevalence, and can vary based on locality and serovar. This study aimed to identify the seroprevalence, geographical determinants, and associations of seropositivity of leptospirosis in the district of Colombo in Sri Lanka, and to determine diagnostic cut-off titres for MAT in the community studied. This study utilized a stratified cluster sampling model in the Colombo district of Sri Lanka, to sample individuals living in urban and semi-urban areas. Serovar specific MAT titres were measured on recruited individuals using a panel of saprophytic (Leptospira biflexa) and 11 pathogenic Leptospira spp. serovars. Associations between environmental risk factors and MAT positivity were examined, with location mapping using GIS software. A total of 810 individuals were included. The mean age was 51.71 years (SD 14.02) with male predominance (60%). A total of 429 (53%) tested positive at a titer of 1/40 or more for the saprophytic Leptospira biflexa serovar Patoc. Pathogenic serovar MAT was positive at a titer of 1/40 or more for at least one serovar in 269 (33.2%) individuals. From the perspective of screening for clinical disease, serovar-specific cut-off titres of 1/80 for Leptospira spp. serovars Hebdomadis, Icterohaemorrhagiae, Pomona, Ratnapura and Patoc, 1/160 for serovars Pyrogenes and Cynopteri, and 1/40 for other serovars were determined, based on the 75th quartile MAT titre for each serovar. Serovar Pyrogenes (15.9%) had the highest seroprevalence, with serovars Ratnapura, Bankinang and Australis accounting for 9.9%, 9.6% and 9.3% respectively. When the proposed new cut-offs were applied, Bankinang(9.6%) Australis(9.3%), Pyrogenes(6.9%) and Ratnapura(6.9%) were the most prevalent serovars. No significant differences in seroprevalence or serovar patterns were noted between urban and semi-urban settings. Individuals seropositive for Australis, Ratnapura and Icterohaemorrhagiae were clustered around main water bodies as well as around smaller tributaries and paddy fields. Those positive for the serovar Pyrogenes were clustered around inland tributaries, smaller water sources and paddy fields. Associations of MAT positivity included high risk occupational exposure, environmental exposure including exposure to floods, bathing in rivers and lakes, using well-water for bathing, contact with stagnant water, propensity to skin injuries, presence of rats in the vicinity, and proximity to water sources. For pathogenic serovars, high-risk occupational exposure remained statistically significant following adjustment for other factors (adjusted OR = 2.408, CI 1.711 to 3.388; p<0.0001; Nagelkerke R2 = 0.546). High risk occupational exposure was determined to be independently associated with seropositivity. Baseline community MAT titres vary according to serovar, and presumably the locality. Testing against saprophytic serovars is unreliable. Thus, diagnostic MAT titre cut-offs should be determined based on region and serovar, and the use of a single diagnostic MAT cut-off for all populations is likely to result in false negatives.


Assuntos
Aglutininas/sangue , Doenças Endêmicas , Leptospira/imunologia , Leptospirose/epidemiologia , População Suburbana , População Urbana , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Testes de Aglutinação , Cidades/epidemiologia , Feminino , Humanos , Leptospira/classificação , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Estudos Soroepidemiológicos , Sri Lanka/epidemiologia , Adulto Jovem
10.
Trans R Soc Trop Med Hyg ; 113(10): 579-586, 2019 10 11.
Artigo em Inglês | MEDLINE | ID: mdl-31225623

RESUMO

Primaquine was the only licenced antimalarial hypnozoiticidal drug available until recently. Now there is a newly approved alternative: tafenoquine. This review explores the efficacy of tafenoquine as a primary and terminal prophylactic agent in malaria. Multiple databases (Cochrane Central Register of Controlled Trials [CENTRAL], MEDLINE [PubMed], Embase [Ovid], Scopus, CINAHL [EBSCOhost] and LILACS) were searched for clinical randomised controlled trials that had used tafenoquine for prophylaxis without language or time restrictions. The last date of searching was 13 August 2018. For primary prophylaxis, tafenoquine reduced episodes of malaria compared with placebo, at a dose range from 50 mg weekly to 400 mg monthly in three trials conducted in Ghana, Kenya and Thailand. Two trials compared tafenoquine vs mefloquine, but malaria episodes were too few to reach a conclusion. For terminal prophylaxis, evidence from two trials suggest that tafenoquine may have equal or better efficacy compared with primaquine. All trials excluded pregnant participants or those with G6PD deficiency. Tafenoquine is effective for both primary and terminal prophylaxis. If used for primary prophylaxis it may continue to offer protection against vivax relapses after exposure has ended (as terminal prophylaxis).


Assuntos
Aminoquinolinas/uso terapêutico , Antimaláricos/uso terapêutico , Malária/prevenção & controle , Humanos , Malária/tratamento farmacológico , Resultado do Tratamento
11.
Pathog Glob Health ; 112(8): 404-414, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30507366

RESUMO

Dengue infection classically presents with fever, thrombocytopaenia, and varying degrees of plasma leakage, giving rise to shock. However, a myriad of other manifestations, involving the cardiovascular system, the nervous system, the liver, the kidneys, the gut and the haematological system have been reported in dengue. This review summarizes these varied presentations.


Assuntos
Dengue/patologia , Hemorragia/etiologia , Hemorragia/patologia , Humanos , Choque Hemorrágico/etiologia , Choque Hemorrágico/patologia , Trombocitopenia/etiologia , Trombocitopenia/patologia
12.
Trans R Soc Trop Med Hyg ; 111(2): 43-54, 2017 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-28449088

RESUMO

The mite-borne rickettsial zoonosis scrub typhus is widely prevalent in parts of Southeast and Far East Asia, and northern Australia. The disease is an acute febrile illness, associated with rash and often an eschar, which responds dramatically to treatment with antibiotics. In some cases it results in a serious illness leading to multiple organ involvement and death. The disease manifestations are thought to result from a systemic vasculitis, caused by both direct effects of the organisms as well as an exaggerated immune response, although little is understood about its pathogenesis. A wide spectrum of clinical manifestations, affecting nearly every organ system, have been described with scrub typhus. Some of these manifestations are serious and life threatening. In this systematic review, we summarise the typical and atypical manifestations of scrub typhus reported in the literature. Awareness of these unusual manifestations will hopefully guide clinicians towards diagnosing the condition early, and initiating early appropriate antibiotics and other supportive measures.


Assuntos
Tifo por Ácaros , Humanos , Orientia tsutsugamushi , Tifo por Ácaros/complicações , Tifo por Ácaros/diagnóstico , Tifo por Ácaros/imunologia , Tifo por Ácaros/patologia
13.
Pathog Glob Health ; 111(7): 333-342, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28948861

RESUMO

Toxoplasmosis is an infection caused by the intracellular protozoan parasite Toxoplasma gondii, and is associated with clinically significant infection in immunocompromised individuals. Vertical transmission during pregnancy can manifest as congenital toxoplasmosis in the neonate, and can have serious consequences. This review aims to describe the modalities for prophylaxis of toxoplasmosis in susceptible populations, and focuses on the following: (1) prophylaxis of congenital toxoplasmosis; (2) prophylaxis of toxoplasmosis in patients with HIV/AIDS; and (3) prophylaxis of toxoplasmosis in transplant recipients.


Assuntos
Toxoplasmose/prevenção & controle , Infecções por HIV/complicações , Humanos , Transmissão Vertical de Doenças Infecciosas/prevenção & controle , Toxoplasmose/complicações , Transplantados
14.
BMC Res Notes ; 10(1): 595, 2017 Nov 14.
Artigo em Inglês | MEDLINE | ID: mdl-29137662

RESUMO

OBJECTIVE: The objectives of this study were to; (a) evaluate the current practices of peer assisted learning among second year and final year medical students of Faculty of Medicine, University of Colombo, Sri Lanka; (b) identify reasons for engaging in peer assisted learning; (c) identify perceived weaknesses in current learning activities; and (d) determine student characteristics associated with engaging in peer assisted learning. RESULTS: This cross sectional study interviewed two hundred and eighty-four eligible students. Average number of hours spent on peer assisted learning during a week was significantly greater among second year students compared to final year students (15.1 vs. 7.1 h, p < 0.05). Overall, female students were more likely to engage in peer assisted learning than male students. In second year, most common method of peer assisted learning was mass lectures offered by batch mates or seniors, while in final year it was group discussions. This reflected a transition to more focused, interactive, active learning among senior students.


Assuntos
Aprendizagem , Grupo Associado , Estudantes de Medicina , Estudos Transversais , Feminino , Humanos , Masculino , Sri Lanka
15.
Trans R Soc Trop Med Hyg ; 111(10): 433-439, 2017 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-29385613

RESUMO

The global incidence of dengue has increased sevenfold between 1990 and 2013. Despite a low case fatality rate (<1%), during epidemics, due to the large number of people affected, overall mortality rates can be significant. The risk of clinically significant bleeding in dengue is unpredictable and often contributes to an adverse outcome. This systematic review focuses on the evidence for prophylactic and therapeutic interventions for bleeding in dengue infection. PubMed, CINAHL, Cochrane Library, Embase and Google Scholar were searched for randomized, quasi-randomized and non-randomized, prospective or retrospective studies that had a control group alongside an intervention aimed at stopping or preventing bleeding in dengue infection. Eleven studies that included 1904 patients in 12 study arms were eligible. These assessed the role of platelet transfusion [two randomized controlled trials (RCTs) and three non-randomized studies], plasma transfusion (one RCT), recombinant activated factor VII (one RCT), anti-D globulin (two RCTs), immunoglobulin (one RCT) and interleukin 11 (one RCT) as prevention or treatment for bleeding. Due to significant heterogeneity in study design and outcome reporting, a meta-analysis was not performed. Currently there is no evidence that any of the above interventions would have a beneficial effect in preventing or treating clinically significant bleeding in dengue.


Assuntos
Dengue/complicações , Fator VIIa/uso terapêutico , Hemorragia/terapia , Imunoglobulinas/uso terapêutico , Fatores Imunológicos/uso terapêutico , Trombocitopenia/terapia , Dengue/fisiopatologia , Dengue/terapia , Hemorragia/prevenção & controle , Humanos , Transfusão de Plaquetas , Guias de Prática Clínica como Assunto , Estudos Prospectivos , Tempo de Protrombina , Ensaios Clínicos Controlados Aleatórios como Assunto , Proteínas Recombinantes/uso terapêutico , Trombocitopenia/etiologia
16.
Mil Med Res ; 4: 19, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28593051

RESUMO

BACKGROUND: Sri Lanka has been free from indigenous malaria since November 2012 and received the WHO certificate for malaria-free status in September 2016. Due to increased global travel, imported malaria cases continue to be reported in the country. Military personnel returning home from international peace-keeping missions in malaria endemic countries represent a key risk group in terms of imported malaria. The present study intended to characterize the potential causes of a malaria outbreak among the Sri Lankan security forces personnel deployed in the Central African Republic (CAR). METHODS: Data were collected from a cross-sectional survey distributed among Sri Lankan Air Force personnel who had returned from United Nations peace-keeping missions in the CAR region. A pre-tested questionnaire was used for the data collection, and focus group discussions were also conducted. RESULTS: One hundred twenty male Air Force personnel were interviewed (out of a group of 122 officers and airmen). All participants were deployed in the CAR for 14 months and were aware of the existence of chemoprophylaxis against malaria. The majority of the subjects (92.5%, 111/120) also knew that prophylaxis should be started prior to departure. However, the regular use of chemoprophylaxis was reported by only 61.7% (74/120) of the sample. Overall, 30.8% of the participants (37/120) had 44 symptomatic episodes of malaria during deployment, and one person succumbed to severe malaria. All cases were associated with noncompliance with chemoprophylaxis. CONCLUSION: Better coordination with overseas healthcare services and the establishment of directly observed chemoprophylaxis may help to avoid similar outbreaks in the future.


Assuntos
Doenças Endêmicas/prevenção & controle , Malária/tratamento farmacológico , Antimaláricos/uso terapêutico , Estudos de Casos e Controles , República Centro-Africana , Quimioprevenção/métodos , Estudos Transversais , Surtos de Doenças/prevenção & controle , Surtos de Doenças/estatística & dados numéricos , Grupos Focais , Humanos , Malária/epidemiologia , Malária/etnologia , Militares/estatística & dados numéricos , Plasmodium falciparum/patogenicidade , Plasmodium vivax/patogenicidade , Fatores de Risco , Sri Lanka/epidemiologia , Sri Lanka/etnologia , Inquéritos e Questionários
17.
Trans R Soc Trop Med Hyg ; 109(5): 294-302, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25813883

RESUMO

Leptospirosis is an illness with a wide spectrum of clinical manifestations and severe illness affects nearly all organ systems. Serious and potentially life-threatening clinical manifestations of acute leptospirosis are caused by both direct tissue invasion by spirochaetes and by the host immune responses. In its severe form, leptospirosis can cause multi-organ dysfunction and death in a matter of days. Therefore it is critical to suspect and recognize the disease early, in order to initiate timely treatment. While the classical presentation of the disease is easily recognized by experienced clinicians practising in endemic regions, rarer manifestations can be easily missed. In this systematic review, we summarize the atypical manifestations reported in literature in patients with confirmed leptospirosis. Awareness of these unusual manifestations would hopefully guide clinicians towards early diagnosis.


Assuntos
Leptospira/isolamento & purificação , Leptospirose/diagnóstico , Diagnóstico Diferencial , Progressão da Doença , Reservatórios de Doenças , Diagnóstico Precoce , Humanos , Leptospirose/microbiologia , Leptospirose/prevenção & controle
18.
Int Health ; 7(5): 317-23, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26204895

RESUMO

INTRODUCTION: Sri Lanka has eliminated local transmission of malaria. Assessing physician preparedness for early case detection is important, in order to prevent re-establishment of local transmission. METHODS: Adherence to malaria screening practices in patients admitted with fever to 12 hospitals in a previously malaria endemic district was evaluated using a cross sectional survey. In addition, knowledge and attitudes among doctors on current malaria surveillance practices and treatment recommendations was assessed. RESULTS: Of 403 fever patients, 150 warranted screening for malaria under the criteria defined by the Anti Malaria Campaign (AMC), with 93 of them having fever for over 7 days. Of these eligible patients, 12.6% (19/150) were investigated by doctors (including 3 persons with fever over 7 days), 14.6% (22/150) by laboratory staff and 72.6% (109/150) by the research team. The majority of doctors were not familiar with the treatment guidelines for malaria (76.5%, 75/98). CONCLUSIONS: Mandatory continuous medical education programmes need to continue to ensure that malaria remains on the differential diagnosis of a fever patient, especially in patients with fever over 7 days. It is essential to publicize the availability of free-of-charge malaria diagnostic facilities, and to ensure that proper notification procedures are followed when a malaria patient is diagnosed.


Assuntos
Hospitais , Malária/diagnóstico , Programas de Rastreamento/organização & administração , Vigilância em Saúde Pública/métodos , Adulto , Estudos Transversais , Feminino , Febre/etiologia , Fidelidade a Diretrizes , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Malária/prevenção & controle , Malária/transmissão , Masculino , Guias de Prática Clínica como Assunto , Sri Lanka/epidemiologia
19.
BMC Res Notes ; 7: 918, 2014 Dec 16.
Artigo em Inglês | MEDLINE | ID: mdl-25514970

RESUMO

BACKGROUND: Migration of medical professionals is a long recognized problem in Sri Lanka, but it has not been studied in depth. Undergraduate and postgraduate medical education in Sri Lanka is state sponsored, and loss of trained personnel is a loss of investment. This study assessed the intention to migrate among medical students and newly passed out graduates from the largest medical school in Sri Lanka. METHODS: A cross sectional descriptive study was conducted in the Faculty of Medicine, University of Colombo in September 2013 with the participation of first and fourth year medical students and pre-intern medical graduates. Data was collected using a self administered, pre-tested questionnaire that collected data on socio-demographic details, intention to migrate and factors influencing a decision for or against migration. RESULTS: There were 374 respondents, 162 from first year (females; 104, 64.2%), 159 from fourth year (females; 85, 53.5%) and 53 pre interns (females; 22, 41.5%). Of the entire sample, 89 (23.8%) had already decided to migrate while another 121 (32.3%) were not sure of their decision. The most cited reasons for migration were a perceived better quality of life, better earnings and more training opportunities in the host country. There were no socio-demographic characteristics that had a significant association with the intention to migrate, indicating that it is a highly individualized decision. CONCLUSIONS: The rate of intention to migrate in this sample is low when compared to international studies from Africa and South Asia, but is still significant. The core reasons which prompt doctors to migrate should be addressed by a multipronged approach to prevent brain drain.


Assuntos
Pessoal Profissional Estrangeiro , Médicos , Adulto , Feminino , Humanos , Masculino , Sri Lanka , Adulto Jovem
20.
Int Health ; 6(3): 196-202, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25061075

RESUMO

BACKGROUND: The security forces are a high risk group for malaria transmission in Sri Lanka. Interrupting transmission and maintaining surveillance in this group is an important component of elimination efforts. The objective of the study was to develop a prototype educational programme on malaria for security forces serving in endemic areas. METHODS: An interactive seminar was designed to deliver the required knowledge. The content was on current status, transmission, signs and symptoms and the role of security personnel in identification and prevention of malaria. Each seminar was preceded by a pre-test and followed by a post test to assess the improvement of knowledge. RESULTS: Fifty seminars were held in eight districts over 2 months with 2301 security forces personnel participating. Pre seminar knowledge on malaria was significantly better in the medical corps, those who had completed secondary education and in the Army compared to other security forces (p<0.001). Participation in the seminar resulted in an improvement in all domains tested as shown by test scores in post seminar assessment (p<0.001). CONCLUSIONS: Conducting a formal educational programme is an effective strategy to improve awareness on malaria amongst security forces personnel who are a high risk group for re-introduction of malaria into the country.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Malária/prevenção & controle , Militares , Educação de Pacientes como Assunto/métodos , Adulto , Controle de Doenças Transmissíveis/métodos , Feminino , Humanos , Masculino , Serviços Preventivos de Saúde/métodos , Sri Lanka , Inquéritos e Questionários , Adulto Jovem
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