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1.
Arch Environ Contam Toxicol ; 74(3): 349-360, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29282493

RESUMO

Plastic debris is recognized as a widespread, common and problematic environmental pollutant. An important consequence of this pollution is the ingestion of plastic debris by wildlife. Assessing the degree to which different species ingest plastics, and the potential effects of these plastics on their health are important research needs for understanding the impacts of plastic pollution. We examined debris (plastic and other types) ingestion in three sympatric overwintering gull species (Herring gulls Larus smithsonianus, Great Black-backed Gulls Larus marinus, and Iceland Gulls Larus glaucoides) to understand how debris ingestion differs among species, age classes and sexes in gulls. We also assessed how plastic burdens were associated with body condition to investigate how gulls may be affected by debris ingestion. There were no differences among the species, age classes or sexes in the incidence of debris ingestion (plastic or otherwise), the mass or number of debris pieces ingested. We found no correlation between ingested plastics burdens and individual condition. Gulls ingested plastic debris, but also showed high levels of other debris types as well, including metal, glass and building materials, including a metal piece of debris found within an abscess in the stomach. Thus, when the health effects of debris ingestion on gulls, and other species that ingest debris, is of interest, either from a physical or chemical perspective, it may be necessary to consider all debris types and not just plastic burdens as is often currently done for seabirds.


Assuntos
Charadriiformes , Exposição Ambiental/análise , Plásticos/análise , Instalações de Eliminação de Resíduos , Fatores Etários , Animais , Monitoramento Ambiental/métodos , Feminino , Masculino , Metais , Terra Nova e Labrador , Resíduos/análise
2.
Malar J ; 16(1): 61, 2017 02 02.
Artigo em Inglês | MEDLINE | ID: mdl-28153009

RESUMO

BACKGROUND: Plasmodium vivax is the second most important human malaria parasite, widely spread across the world. This parasite is associated with important issues in the process toward malaria elimination, including potential for relapse and increased resistance to chloroquine. Plasmodium vivax multi-drug resistant (pvmdr1) is suspected to be a marker of resistance although definitive evidence is lacking. Progress has been made in knowledge of biological factors affecting parasite growth, including mechanisms of regulated cell death and the suspected role of metacaspase. Plasmodium vivax metacaspase1 (PvMCA1-cd) has been described with a catalytic domain composed of histidine (H372) and cysteine (C428) residues. The aim of this study was to test for a link between the conserved histidine and cysteine residues in PvMCA1-cd, and the polymorphism of the P. vivax multi-drug resistant gene (pvmdr1). RESULTS: Thirty P. vivax isolates were collected from Mauritania, Sudan, and Oman. Among the 28 P. vivax isolates successfully sequenced, only 4 samples showed the conserved His (372)-Cys (428) residues in PvMCA1-cd. Single nucleotide polymorphisms observed were H372T (46.4%), H372D (39.3%), and C428R (85.7%). A new polymorphic catalytic domain was observed at His (282)-Cys (305) residues. Sequences alignment analysis of pvmdr1 showed SNP in the three codons 958, 976 and 1076. A single SNP was identified at the codon M958Y (60%), 2 SNPs were found at the position 976: Y976F (13%) and Y976V (57%), and 3 SNPs were identified at the position 1076: F1076L (40%), F1076T (53%) and F1076I (3%). Only one isolate was wildtype in all three codons (MYF), 27% were single MYL mutants, and 10% were double MFL mutants. Three new haplotypes were also identified: the triple mutant YVT was most prevalent (53.3%) distributed in the three countries, while triple YFL and YVI mutants (3%), were only found in samples from Sudan and Mauritania. CONCLUSIONS: Triple or quadruple mutants for metacaspase genes and double or triple mutants for Pvmdr1 were observed in 24/28 and 19/28 samples. There was no difference in the frequency of mutations between PvMCA1-cd and Pvmdr1 (P > 0.2). Histidine and cysteine residues in PvMCA1-cd are highly polymorphic and linkage disequilibrium with SNPs of Pvmdr1 gene may be expected from these three areas with different patterns of P. vivax transmission.


Assuntos
Plasmodium vivax/genética , Polimorfismo Genético , Proteínas de Protozoários/genética , Mauritânia , Proteínas Associadas à Resistência a Múltiplos Medicamentos/genética , Omã , Polimorfismo de Nucleotídeo Único , Sudão
3.
Arch Virol ; 162(1): 57-61, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27664028

RESUMO

Detection of the hepatitis C virus (HCV) genome is crucial for diagnosis of HCV infection and for monitoring the efficacy of HCV treatment. Thus, we aimed to develop a convenient screening test for common HCV genotypes based on melting curve analysis with PCR. Serum samples were drawn from 124 patients with known HCV infection confirmed to be antibody and HCV RNA positive. A characteristic melting curve was obtained by monitoring the fluorescence as the temperature increased through the melting point of the PCR product. Results were compared with those obtained by the restriction fragment length polymorphism (RFLP) genotyping method. The melting curve analysis indicated that the different genotypes had discrete melting points (P < 0.0001): 90.43 +/- 0.065 degrees for genotype 1 (n = 35), 90.21 +/- 0.064 degrees for genotype 2 (n = 18), 90.62 +/- 0.045 degrees for genotype 3 (n = 29) and 90.84 +/- 0.130 degrees for genotype 4 (n = 42). The genotype was determined for all samples using the newly developed method as well as RFLP, and the two systems produced concordant results. The sensitivity of the assay was 91.4 % for genotype 1, 83.3 % for genotype 2, 93.1 % for genotype 3, and 85.7 % for genotype 4. Genotypes detected by melting curve analysis significantly correlated with those detected by RFLP (r = 0.946, P < 0.0001) with a strong linear relationship (r 2 = 0.895). This melting curve analysis is a rapid, convenient and low-cost screening test for differentiation of HCV genotypes 1-4.


Assuntos
Técnicas de Genotipagem/métodos , Hepacivirus/classificação , Hepacivirus/genética , Reação em Cadeia da Polimerase em Tempo Real/métodos , Adulto , Benzotiazóis , Diaminas , Feminino , Fluorometria , Hepacivirus/isolamento & purificação , Humanos , Masculino , Pessoa de Meia-Idade , Compostos Orgânicos/análise , Polimorfismo de Fragmento de Restrição , Quinolinas , Sensibilidade e Especificidade , Coloração e Rotulagem/métodos , Temperatura de Transição
4.
J Infect ; 88(2): 71-76, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37866792

RESUMO

This review details recent findings from the Global Meningococcal Initiative's (GMI) recent meeting on the surveillance and control strategies for invasive meningococcal disease in the Middle East. The nature of case reporting and notification varies across the region, with many countries using bacterial meningitis as an IMD case definition in lieu of meningitis and septicaemia. This may overlook a significant burden associated with IMD leading to underreporting or misreporting of the disease. Based on these current definitions, IMD reported incidence remains low across the region, with historical outbreaks mainly occurring due to the Hajj and Umrah mass gatherings. The use of case confirmation techniques also varies in Middle Eastern countries. While typical microbiological techniques, such as culture and Gram staining, are widely used for characterisation, polymerase chain reaction (PCR) testing is utilised in a small number of countries. PCR testing may be inaccessible for several reasons including sample transportation, cost, or a lack of laboratory expertise. These barriers, not exclusive to PCR use, may impact surveillance systems more broadly. Another concern throughout the region is potentially widespread ciprofloxacin resistance since its use for chemoprophylaxis remains high in many countries.


Assuntos
Infecções Meningocócicas , Vacinas Meningocócicas , Neisseria meningitidis , Humanos , Infecções Meningocócicas/epidemiologia , Infecções Meningocócicas/prevenção & controle , Infecções Meningocócicas/microbiologia , Neisseria meningitidis/genética , Oriente Médio/epidemiologia , Surtos de Doenças/prevenção & controle , Incidência , Sorogrupo
5.
Health Sci Rep ; 6(11): e1691, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37936618

RESUMO

Background and Aims: Lower- and middle-income countries have decentralized decision-making at the community level, as well as community governance structures, to encourage community participation in governance processes, particularly in primary healthcare (PHC). In Tanzania, decentralization resulted in the establishment of Health Facility Governing Committees (HFGCs) to encourage community participation in the governance of primary health facilities to improve the quality and responsiveness of health service delivery. Nonetheless, despite the presence of HFGCs, PHC delivery remains ineffective and of poor quality. It is unclear who makes governance decisions at PHC facilities to ensure that services delivered are of expected quality and respond the community's needs, tastes, and preferences. This paper aims to assess the perspectives of members of the HFGC on who make governance decision in the context of fiscal decentralization. Design and Methods: A cross-section design was used to collect both quantitative and qualitative data. A four-multistage sampling technique was adopted to selects regions, council, health facilities, and HFGC members. Respondents who participated in structured questionnaire responses were chosen using proportional sampling, whereas those who participated in in-depth interviews and Focus Group Discussions were chosen using purposive selection. The data was analyzed descriptively and thematically. Results: The study revealed that HFGCs members perceive that governance decisions in primary health facilities are primarily made by the health facility management, and later are presented in HFGCs. As such, HFGCs are used a passively used to justify participation in decision that was already made by the management, which contradict with the principal of decentralization that emphasizes community participation on fiscal decisions. Conclusion: Decentralization of PHC facilities does not guarantee the participation of community members in fiscal decision of their respective primary health facilities through HFGCs. HFGC is passively used governance structure to substitute community participation in primary health facilities' fiscal decisions. Enforcement mechanisms are required to facilitate effective community participation.

6.
Antibiotics (Basel) ; 12(12)2023 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-38136699

RESUMO

Antimicrobial resistance (AMR), a serious global public health challenge, may have accelerated development during the COVID-19 pandemic because antibiotics were prescribed for COVID-19. This study aimed to assess antibiotics use before and during the pandemic and correlate the results with the rate of resistant microorganisms detected in hospitalized patients during the study period. This single-center study looked retrospectively at four years of data (2018-2021) from Royal Hospital, Muscat, which is the biggest hospital in Oman with approximately 60,000 hospital admissions yearly. The consumption rate of ceftriaxone, piperacillin tazobactam, meropenem, and vancomycin was presented as the antibiotic consumption index, the ratio of defined daily dose (DDD) per 100 bed days. Analyses were performed using the nonparametric test for trend across the study period. Correlation between antibiotic consumption indexes and the isolated microorganisms in the four-year study period was performed using Spearman's rank correlation coefficient. We compared data from the pre-COVID-19 to the COVID-19 period. Though more patients were admitted pre-COVID-19 (132,828 versus 119,191 during COVID-19), more antibiotics were consumed during the pandemic (7350 versus 7915); vancomycin and ceftriaxone had higher consumption during than before the pandemic (p-values 0.001 and 0.036, respectively). Vancomycin-resistant Enterococcus (VRE) and Candida auris were detected more during the COVID-19 period with p-values of 0.026 and 0.004, respectively. Carbapenem-resistant Enterobacterales (CRE), vancomycin-resistant Enterococcus spp., and C. auris were detected more often during the pandemic with p-values of 0.011, 0.002, and 0.03, respectively. Significant positive correlations between antibiotic consumption and drug-resistant isolates were noted. This study confirms that the overuse of antibiotics triggers the development of bacterial resistance; our results emphasize the importance of antibiotic control.

7.
Ultrasound Obstet Gynecol ; 40(4): 452-8, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22173924

RESUMO

OBJECTIVES: To study Doppler changes in the uterine artery immediately following and 3 months after uterine artery embolization (UAE) and to test the feasibility of using uterine artery Doppler as a predictor of the predominant side of arterial supply to leiomyomas, amount of embolizing material needed and leiomyoma tumor volume at follow-up. METHODS: The study included 38 patients undergoing UAE for leiomyomas. Uterine artery Doppler was performed transabdominally before, within 6 hours after and 3 months after UAE to determine the peak systolic (PSV) and end-diastolic (EDV) velocities and resistance index (RI). Leiomyoma volume was measured using contrast-enhanced magnetic resonance imaging (MRI) before and 3 months after UAE. The predominant side of arterial supply to the leiomyoma was determined on digital subtraction angiography using the uterine artery diameter and tumor blush after contrast injection. For correlations with leiomyoma volume, the average PSV, EDV and RI of both sides was used, while for prediction of the predominant side of supply and for correlation with the amount of embolizing material needed, separate measurements from each side were used. RESULTS: Relative to the pre-embolization value, the uterine artery PSV and EDV were significantly reduced (P < 0.05) immediately following UAE, while the RI was significantly elevated (P < 0.05). For prediction of the predominant side of supply, the lowest RI showed the highest accuracy (81.6%). There was no significant correlation between the pre-embolization PSV, EDV or RI and the amount of embolizing material utilized. Immediately post-embolization EDV and RI values were statistically significantly correlated with the 3-month follow-up leiomyoma volume, with RI showing the strongest correlation (P = 0.0400 and 0.0002, rho = 0.34 and - 0.58, respectively). The leiomyoma volume was predicted to have reduced by 38-61% after 3 months if the immediate post-embolization average RI value was between 0.82 and 0.88. CONCLUSION: Pre-interventional Doppler assessment can be used to predict the predominant side of supply to leiomyomas but not the amount of embolizing material needed. Immediate post-interventional Doppler assessment can predict the leiomyoma volume after UAE.


Assuntos
Leiomioma/diagnóstico por imagem , Leiomioma/cirurgia , Ultrassonografia Doppler , Embolização da Artéria Uterina , Artéria Uterina/diagnóstico por imagem , Neoplasias Uterinas/diagnóstico por imagem , Neoplasias Uterinas/cirurgia , Adulto , Meios de Contraste , Feminino , Seguimentos , Humanos , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Resultado do Tratamento , Carga Tumoral
8.
Heart Lung Circ ; 21(5): 305-6, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22483578

RESUMO

We present a case of repeat percutaneous intervention on a coronary artery bypass vein graft using polytetrafluoroethylene (PTFE) covered stents. The original intervention was performed using a combination of PTFE covered stents and bare metal stents for a large vein graft aneurysm. Successful exclusion of the aneurysm was demonstrated on follow up angiography. The patient represented six years after the original intervention with a non ST-segment elevation myocardial infarction. Further angiography demonstrated a recurrence of the aneurysm which we presumed to be due to late malapposition and required repeat PTFE covered stent deployment.


Assuntos
Angioplastia Coronária com Balão/métodos , Oclusão de Enxerto Vascular/terapia , Aneurisma Cardíaco/cirurgia , Stents , Idoso de 80 Anos ou mais , Ponte de Artéria Coronária , Oclusão de Enxerto Vascular/patologia , Oclusão de Enxerto Vascular/cirurgia , Aneurisma Cardíaco/patologia , Humanos , Masculino , Infarto do Miocárdio/diagnóstico , Infarto do Miocárdio/patologia , Recidiva , Fatores de Tempo
9.
Trop Anim Health Prod ; 44(1): 1-3, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21660649

RESUMO

Caprine arthritis encephalitis (CAE) is a chronic debilitating disease of goats caused by a lentivirus responsible for economic losses as a result of a drop in milk production and weight loss. The objective of the study was to determine if indigenous goats from five different regions in the Sultanate of Oman exhibit serological evidence of exposure to CAEV using a competitive-inhibition ELISA technique. Blood samples were collected from slaughtered goats (N=1,110) and from the National Serum Bank (n=528). In total, 83 (5.1%) of screened samples were classed as seropositive. The results provide the first serological evidence for the presence of CAEV in Oman.


Assuntos
Vírus da Artrite-Encefalite Caprina/isolamento & purificação , Doenças das Cabras/epidemiologia , Infecções por Lentivirus/veterinária , Fatores Etários , Animais , Anticorpos Antivirais/sangue , Ensaio de Imunoadsorção Enzimática/veterinária , Doenças das Cabras/sangue , Doenças das Cabras/virologia , Cabras , Infecções por Lentivirus/sangue , Infecções por Lentivirus/epidemiologia , Infecções por Lentivirus/virologia , Omã/epidemiologia , Estudos Soroepidemiológicos
10.
Curr Probl Cardiol ; 47(9): 100885, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34175152

RESUMO

In infants with ductal dependent pulmonary blood flow, Blalock-Taussig (BT) shunt and Patent Ductus Arteriosus (PDA) stent, are two palliative procedures aimed to restore circulation. A systematic review and metanalysis was performed on studies comparing PDA stents and BT shunts, in accordance with PRISMA guidelines. Meta-analysis revealed the following; (1) a reduced risk of mortality [RR = 0.585 [0.399-0.859], (P = 0.006)], (2) a reduced risk of complications [RR = 0.523 [0.318-0.860], (P = 0.011), and (3) a reduced risk of ECMO use [R = 0.267 [0.101-0.706] (P = 0.008)], all in the stent group. Additionally, stent group showed higher post procedure oxygen saturation [SMD = 1.307 [95% CI 1.065-1.550], (P < 0.001)], and Nakata index [SMD = 0.679 95% CI [0.513 to 0.845], (P < 0.001)]. PDA stenting presents a viable alternative to BT shunt procedure with better post procedure stability.


Assuntos
Procedimento de Blalock-Taussig , Permeabilidade do Canal Arterial , Procedimento de Blalock-Taussig/efeitos adversos , Cateterismo Cardíaco , Permeabilidade do Canal Arterial/cirurgia , Humanos , Artéria Pulmonar/cirurgia , Circulação Pulmonar , Stents , Resultado do Tratamento
11.
J Epidemiol Glob Health ; 11(2): 224-229, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33969949

RESUMO

OBJECTIVES: To investigate the course of a community gastroenteritis outbreak by Salmonella and implement interventional activities and roles to prevent occurring such an outbreak in the future. METHODS: From August 27 to 2 September 2015, 101 individuals were reported among a local community. All affected individuals had a history of food consumption at a local restaurant. A rapid response team conducted active surveillance and interview with the affected individuals and workers of the restaurant. Food items and stools from food handlers and affected individuals were cultured and sent for genotyping. An environmental audit of the restaurant had been conducted. RESULTS: The total majority of the affected individuals were male and more than 70% belonged to the young age group from 15 to 45 years. Out of the total, 97% had diarrhea, 70% fever, 56% abdominal cramps and 49% vomiting. All those affected were managed symptomatically except for 14 cases admitted for intravenous rehydration. Breakdown of food safety and basic personal hygiene were detected in the environment of the restaurant and among the workers. There are 39 out of 49 stool cultures of cases, six out of 18 food handlers, and five food samples were positive for Salmonella spp. The identical DNA fingerprinting pattern among S. Weltevreden strains originating from human cases and food was detected. CONCLUSION: This is the first reported community foodborne of S. Weltevreden outbreak in Oman. The importance of food safety and rigors environmental safety is emphasized. Basic personal hygiene and training of food handlers in restaurants are recommended with public health measurements.


Assuntos
Surtos de Doenças , Gastroenterite , Restaurantes , Intoxicação Alimentar por Salmonella , Adolescente , Adulto , Criança , Pré-Escolar , Fezes/microbiologia , Feminino , Gastroenterite/epidemiologia , Gastroenterite/microbiologia , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Omã/epidemiologia , Salmonella/genética , Salmonella/isolamento & purificação , Intoxicação Alimentar por Salmonella/epidemiologia , Adulto Jovem
12.
Sultan Qaboos Univ Med J ; 20(1): e29-e36, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32190367

RESUMO

OBJECTIVES: Stigma and discrimination undermine the quality of life of people with HIV and their access to health services. This study aimed to assess HIV-related knowledge, attitudes and practices among healthcare workers (HCWs) in Oman. METHODS: This cross-sectional study took place between July and November 2016. A questionnaire was distributed to 1,400 government HCWs to determine HIV-related knowledge, attitudes and practices. RESULTS: A total of 1,281 HCWs participated (response rate = 92%). Routine tasks, such as dressing wounds, drawing blood and touching clothes, were a cause of concern for 24-52% of HCWs. Only 69% correctly answered questions regarding the transmission of HIV via eating/drinking and mosquito bites. Compared to other HCWs, doctors had significantly higher knowledge (mean = 0.46, 95% confidence interval [CI]: 0.19 to 0.73; P <0.001), attitude (mean = 0.77, 95% CI: 0.31 to 1.24; P = 0.001) and practice (mean = 2.07, 95% CI: 1.59 to 2.55; P <0.001) scores. Expatriates also scored significantly higher in knowledge (mean = 1.08, 95% CI: 0.93 to 1.23; P <0.001), attitude (mean = 1.23, 95% CI: 0.98 to 1.48; P <0.001) and practice (mean = 1.08, 95% CI: 0.82 to 1.34; P <0.001) compared to Omani nationals. Finally, those with >15 years' work experience scored significantly higher on knowledge (mean = -0.60, 95% CI: -1.12 to -0.08; P = 0.025) and attitude (mean = -0.99, 95% CI: -1.87 to -0.10; P = 0.029) compared to those with less experience. CONCLUSION: The high rate of HIV-related stigma among HCWs in Oman should be rectified in order to achieve the 90-90-90 target set by the Joint United Nations Programme on HIV/AIDS.


Assuntos
Infecções por HIV/psicologia , Conhecimentos, Atitudes e Prática em Saúde , Pessoal de Saúde/psicologia , Discriminação Social/psicologia , Estigma Social , Adulto , Atitude do Pessoal de Saúde , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Omã , Inquéritos e Questionários
13.
Int J Infect Dis ; 90: 97-103, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31639520

RESUMO

BACKGROUND: In December 2018, routine surveillance identified an autochthonous outbreak of dengue fever in Muscat Governorate, Oman, a region previously free of dengue fever. METHODS: Routine surveillance confirmed locally acquired cases in the second week of December, leading to a rapid public health response including case management guidance and epidemiological investigations. The main activity was the vector survey using systematic sampling to assess extent of previously unreported Aedes aegypti presence followed by a campaign aimed to eliminate breeding sites of A. aegypti". RESULTS: During a 5-month period, 343 suspected cases were reported from Muscat Governorate with 122 from the outbreak affected area. Out of 207 probable cases eligible for laboratory testing as per guidelines issued, 59 cases were confirmed. The vector elimination campaign started on January 8, 2019 after a media advocacy using television and social media and concluded on January 23. By the end of campaign, the case load had decreased significantly in the affected area with no reports of locally acquired cases from adjoining areas of Muscat Governorate, indicating no further spread. CONCLUSIONS: Rapid notification and early community-wide, extensive vector control activities effectively contained the autochthonous dengue fever virus outbreak.


Assuntos
Dengue/epidemiologia , Surtos de Doenças , Aedes/virologia , Animais , Vírus da Dengue/isolamento & purificação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Mosquitos Vetores/virologia , Omã , Vigilância em Saúde Pública
14.
East Mediterr Health J ; 25(1): 40-46, 2019 Mar 19.
Artigo em Inglês | MEDLINE | ID: mdl-30919924

RESUMO

BACKGROUND: Oman is witnessing an increase in outbound and inbound travelers. AIMS: This study was undertaken to assess the current knowledge, attitude, and practice of travel medicine among primary care physicians (PCPs) working in the Muscat Governorate. METHODS: We conducted a cross-sectional survey of 108 primary healthcare physicians in primary healthcare institutions in the Muscat Governorate in December 2014 using a self-administered questionnaire. RESULTS: We had a response rate of 81%, 78% (n = 84) were females, 56.5% (n= 61) were Omani nationals. More than 50% (n= 54) of study participants had been in practice for more than 8 years. Sixty-eight (58.3%) reported having pre-travel consultations during the previous 1-month period and 86 (79.6%) had post-travel consultations. Most of the PCPs were aware of the issues that needed to be addressed in pre-travel consultation. CONCLUSIONS: This study showed that travel health is in an early stage of development in Oman and supports the need for the establishment of travel medicine services.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Médicos de Atenção Primária/estatística & dados numéricos , Medicina de Viagem , Competência Clínica , Estudos Transversais , Feminino , Necessidades e Demandas de Serviços de Saúde , Humanos , Masculino , Omã , Médicos de Atenção Primária/psicologia , Inquéritos e Questionários , Medicina de Viagem/estatística & dados numéricos
16.
PLoS Negl Trop Dis ; 13(4): e0007100, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-31022170

RESUMO

BACKGROUND: Crimean-Congo hemorrhagic fever (CCHF) is a serious disease with a high fatality rate reported in many countries. The first case of CCHF in Oman was detected in 1995 and serosurveys have suggested widespread infection of humans and livestock throughout the country. METHODOLOGY: Cases of CCHF reported to the Ministry of Health (MoH) of Oman between 1995 and 2017 were retrospectively reviewed. Diagnosis was confirmed by serology and/or molecular tests in Oman. Stored RNA from recent cases was studied by sequencing the complete open reading frame (ORF) of the viral S segment at Public Health England, enabling phylogenetic comparisons to be made with other S segments of strains obtained from the region. FINDINGS: Of 88 cases of CCHF, 4 were sporadic in 1995 and 1996, then none were detected until 2011. From 2011-2017, incidence has steadily increased and 19 (23.8%) of 80 cases clustered around Eid Al Adha. The median (range) age was 33 (15-68) years and 79 (90%) were male. The major risk for infection was contact with animals and/or butchering in 73/88 (83%) and only one case was related to tick bites alone. Severe cases were over-represented: 64 (72.7%) had a platelet count < 50 x 109/L and 32 (36.4%) died. There was no intrafamilial spread or healthcare-associated infection. The viral S segments from 11 patients presenting in 2013 and 2014 were all grouped in Asia 1 (IV) lineage. CONCLUSIONS: CCHF is well-established throughout Oman, with a single strain of virus present for at least 20 years. Most patients are men involved in animal husbandry and butchery. The high mortality suggests that there is substantial under-diagnosis of milder cases. Preventive measures have been introduced to reduce risks of transmission to animal handlers and butchers and to maintain safety in healthcare settings.


Assuntos
Vírus da Febre Hemorrágica da Crimeia-Congo/isolamento & purificação , Febre Hemorrágica da Crimeia/epidemiologia , Adolescente , Adulto , Idoso , Criação de Animais Domésticos , Animais , Feminino , Vírus da Febre Hemorrágica da Crimeia-Congo/genética , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Epidemiologia Molecular , Omã/epidemiologia , Estudos Retrospectivos , Carrapatos/virologia , Adulto Jovem
17.
J Infect Public Health ; 11(5): 742-744, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29779847

RESUMO

The prevention of infection through vaccination has been among the most successful public health interventions. Nearly 2.5 million deaths per year globally are saved by immunization against vaccine-preventable disease (VPD) (WHO, 2013) [1]. Oman has experienced a sharp decline in VPDs over the last 40 years due to the introduction of new vaccines and the maintenance of high vaccination coverage of over 99%. The World Health Organization (WHO) and the United Nations Children's Fund (UNICEF) launched the effective vaccine management (EVM) framework to assist countries to gauge the performance of their immunization supply chains. Oman underwent the assessment in 2016 and scored the best score to date. This report looks at the process of EVM and the challenges for the Oman healthcare system to maintain high global standards.


Assuntos
Doenças Transmissíveis/epidemiologia , Transmissão de Doença Infecciosa/prevenção & controle , Programas de Imunização/organização & administração , Cobertura Vacinal , Vacinas/administração & dosagem , Vacinas/provisão & distribuição , Humanos , Omã/epidemiologia
18.
Influenza Other Respir Viruses ; 12(1): 146-152, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29205882

RESUMO

BACKGROUND: Influenza is a serious vaccine-preventable disease with high incidence, hospitalization, and mortality in high-risk groups. The epidemiology, seasonality, and risk factors for influenza are well defined in most of the temperate countries, but estimating influenza burden in the World Health Organization (WHO) Region for the Eastern Mediterranean is scarce. In Oman, despite the advancements in influenza surveillance, the clinical burden and seasonality of influenza remain not fully understood. OBJECTIVES: To estimate the incidence of influenza-associated hospitalizations and in-hospital death in Oman. PATIENTS AND METHODS: Influenza-associated hospitalizations and in-hospital deaths were estimated using hospital discharge records based on ICD-10 codes (J09-J18), results of virological analysis and population census for the period between 2012 and 2015. RESULTS: During 2012 and 2015, we identified a total of 19 405 influenza-associated hospitalization and 847 deaths. Influenza positivity percentage ranged from 6.4% in 2013 to 20.6% in 2015. Influenza-associated hospitalization incidence rate was 7.3 (95% CI: 6.4-8.1) per 100 000 in 2013 and 27.5 (95% CI: 25.9-29.1) per 100 000 in 2015 with an overall rate of 20.6 (95% CI: 19.9-21.3) per 100 000. The highest incidence of influenza-associated death was among those aged ≥65 years and ranged between 39.5 (95% CI: 27.3-51.8) per 100 000 in 2014 and 11.3 (95% CI: 7.5-15.1) in 2015. CONCLUSIONS: Influenza causes a substantial number of hospitalizations and deaths in Oman. Hospitalization rates were highest among children, and adults ≥65 years showed the highest death rate. The potential value of using seasonal influenza vaccine in these groups should be considered.


Assuntos
Influenza Humana/epidemiologia , Influenza Humana/mortalidade , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Hospitalização/estatística & dados numéricos , Humanos , Lactente , Recém-Nascido , Vacinas contra Influenza , Influenza Humana/prevenção & controle , Pessoa de Meia-Idade , Omã , Estudos Retrospectivos , Fatores de Risco , Estações do Ano , Fatores de Tempo , Adulto Jovem
19.
Hepatol Int ; 11(3): 286-291, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28425016

RESUMO

INTRODUCTION: A simple non-invasive score (Fibrofast, FIB-5) was developed using five routine laboratory tests (ALT, AST, alkaline phosphatase, albumin and platelets count) for the detection of significant hepatic fibrosis in patients with chronic hepatitis C. The FIB-4 index is a non-invasive test for the assessment of liver fibrosis, and a score of ≤1.45 enables the correct identification of patients who have non-significant (F0-1) from significant fibrosis (F2-4), and could avoid liver biopsy. The aim of this study was to compare the performance characteristics of FIB-5 and FIB-4 to differentiate between non-significant and significant fibrosis. METHOD: A cross-sectional study included 604 chronic HCV patients. All liver biopsies were scored using the METAVIR system. Both FIB-5 and FIB-4 scores were measured and the performance characteristics were calculated using the ROC curve. RESULTS: The performance characteristics of FIB-5 at ≥7.5 and FIB-4 at ≤1.45 for the differentiation between non-significant fibrosis and significant fibrosis were: specificity 94.4%, PPV 85.7%, and specificity 54.9%, PPV 55.7% respectively. CONCLUSION: FIB-5 score at the new cutoff is superior to FIB-4 index for the differentiation between non-significant and significant fibrosis.


Assuntos
Alanina Transaminase/sangue , Fosfatase Alcalina/sangue , Aspartato Aminotransferases/sangue , Biomarcadores/sangue , Hepatite C Crônica/sangue , Cirrose Hepática/sangue , Testes Imediatos , Adulto , Biópsia , Estudos Transversais , Egito/epidemiologia , Genótipo , Hepacivirus/genética , Hepatite C Crônica/complicações , Hepatite C Crônica/patologia , Hepatite C Crônica/virologia , Humanos , Fígado/patologia , Cirrose Hepática/complicações , Cirrose Hepática/patologia , Pessoa de Meia-Idade , Contagem de Plaquetas/métodos , Vírus de RNA/genética , Albumina Sérica/análise
20.
Aliment Pharmacol Ther ; 45(5): 681-687, 2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-28070899

RESUMO

BACKGROUND: Chronic hepatitis C virus infection is one of the most important health problems in Egypt. The Ministry of Health's National Treatment Programme introduced sofosbuvir-based therapy in October 2014. AIM: To assess the clinical effectiveness and predictors of response to SOF-based treatment regimens, either dual therapy, with SOF/ribavirin (RBV) for 6 months or triple therapy with SOF/peg-IFN-alfa-2a/RBV for 3 months, in a cohort of patients treated in National Treatment Programme affiliated centres in Egypt. METHODS: Between October 2014 and end of 2014, patients who were eligible for treatment were classified according to their eligibility for interferon therapy: Group 1 (interferon eligible) were treated with triple therapy for 12 weeks and Group 2 (interferon ineligible) were treated with dual therapy for 24 weeks. Difficult to treat patients included those with F3-F4 on Metavir score, Fib-4 >3.25, albumin ≤3.5, total Bilirubin >1.2 mg/dL, INR >1.2 and platelet count <150 000 mm3 . RESULTS: Twelve weeks post-treatment data were available on 14 409 patients; 8742 in group 1 and 5667 in group 2. In group 1, the sustained virological response at week 12 (SVR12) was 94% and in group 2 the SVR12 was 78.7%. Multivariate logistic regression analysis in which treatment failure is the dependent variable was done. Male gender, being a difficult to treat patient and previous interferon therapy were significant predictors of nonresponse in both treatment groups. CONCLUSION: Results of sofosbuvir-based therapies in Egypt achieved similar rates of SVR12 as seen in phase III efficacy studies.


Assuntos
Antivirais/administração & dosagem , Hepacivirus/genética , Hepatite C Crônica/tratamento farmacológico , Sofosbuvir/administração & dosagem , Adulto , Antivirais/uso terapêutico , Quimioterapia Combinada , Egito , Feminino , Genótipo , Humanos , Interferon-alfa/administração & dosagem , Masculino , Pessoa de Meia-Idade , Polietilenoglicóis/administração & dosagem , Proteínas Recombinantes/administração & dosagem , Estudos Retrospectivos , Ribavirina/administração & dosagem , Ribavirina/uso terapêutico
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