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1.
Microbiol Resour Announc ; 11(5): e0009522, 2022 May 19.
Artículo en Inglés | MEDLINE | ID: mdl-35389260

RESUMEN

The genome sequences of five strains of a mammarenavirus were assembled from metagenomic data from pygmy mice (Mus minutoides) captured in Sierra Leone. The nearest fully sequenced relatives of this virus, which was named Seli virus, are lymphocytic choriomeningitis virus, Lunk virus, and Ryukyu virus.

2.
Health Sci Rep ; 4(2): e297, 2021 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-34195385

RESUMEN

BACKGROUND AND AIMS: In 2018, the transition to routine vitamin A supplementation (VAS) was integrated with caregivers' preparation of nutritious complementary food from local produce and confidential counseling and provision of modern contraceptives. In 2019, funding for complementary food ceased and Community Health Workers (CHWs) were trained to track defaulters, while national efforts to improve Health Management Information Systems, supply chains and reduce teenage pregnancies were intensified. We report on key indicators after these changes and in comparison, to those previously published. METHODS: The same Lot Quality Assurance Sampling methodology was used in both assessments: 19 villages were randomly selected in each of five lots in each of three districts then caregivers of children 6-59 months age randomly selected and interviewed. RESULTS: Coverage of VAS, Albendazole, and Pentavalent 3 before and after these changes was over 80%, 75%, and 80% respectively, equitable by sex, age, caregiver's religion, and educational status. Comparison with 2018 found more lots failed to reach 80% VAS by verbal affirmation (10 vs 2), and coverage in one district (Bo) had dropped (77.5% vs 92.3%). Fewer caregivers were aware that VAS should be taken every 6 months (27% vs 50%), that complementary feeding should start at 6 months (63% vs 77%) or were providing minimal dietary diversity (27% vs 45%). There was an increase in caregivers using modern contraception (45% vs 35%), obtaining information about contraception from a friend (14% vs 9%), while fewer thought country rope/herbs (traditional contraceptives) were "effective" (11% vs 21%) and stockouts of contraceptives at health facilities had dropped (24% vs 55%). Stipends for CHWs cost approximately $750 K vs complementary food: $112 K. CONCLUSION: Overall coverage for VAS, Albendazole, and Pentavalent remained effective but VAS had dropped significantly in one district. Complementary feeding practices had declined. Awareness, uptake, and contraceptives supply chains had improved.

3.
Matern Child Nutr ; 16(4): e13041, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32720469

RESUMEN

In 2017, transition to routine vitamin A supplementation (VAS) commenced as an integrated reproductive and child health service including vaccinations, Albendazole for deworming, complementary feeding demonstrations, 'quality' family planning counselling and provision of modern contraceptives. After 10 months, a lot quality assurance sampling survey evaluated coverage of these interventions. Each of three districts was divided into five supervision areas (lots), and 19 villages were randomly selected in each lot proportional to population size. Households were randomly selected, and a questionnaire was administered to a caregiver of a child 6-11, 12-23 and 24-59 months in each village. Overall, caregivers of 855 children were interviewed, and 19 questionnaires were completed for each age group (6-11, 12-23 and 24-59 months) in each of the five lots in each district. All lots in one district passed the threshold of 80% for VAS and 75% coverage for Albendazole, and two lots failed for either VAS/Albendazole in the other two districts. Overall, weighted VAS coverage for children 6-59 months was 86.9%, and weighted Albendazole coverage for children 12-59 months was 80.9%. Most caregivers (77.2%) knew that complementary feeding should be introduced at 6 months, 44.9% were providing three or more (of six) food groups, 84.9% were aware of family planning and 37.5% were using a modern contraceptive. Integration of reproductive and child health services appears to be a suitable platform for routine VAS and Albendazole whilst improving complementary feeding practices and access to family planning.


Asunto(s)
Muestreo para la Garantía de la Calidad de Lotes , Vitamina A , Niño , Suplementos Dietéticos , Servicios de Planificación Familiar , Humanos , Lactante , Sierra Leona
4.
Nat Commun ; 11(1): 510, 2020 01 24.
Artículo en Inglés | MEDLINE | ID: mdl-31980636

RESUMEN

Marburg virus (MARV) causes sporadic outbreaks of severe Marburg virus disease (MVD). Most MVD outbreaks originated in East Africa and field studies in East Africa, South Africa, Zambia, and Gabon identified the Egyptian rousette bat (ERB; Rousettus aegyptiacus) as a natural reservoir. However, the largest recorded MVD outbreak with the highest case-fatality ratio happened in 2005 in Angola, where direct spillover from bats was not  shown. Here, collaborative studies by the Centers for Disease Control and Prevention, Njala University, University of California, Davis USAID-PREDICT, and the University of Makeni identify MARV circulating in ERBs in Sierra Leone. PCR, antibody and virus isolation data from 1755 bats of 42 species shows active MARV infection in approximately 2.5% of ERBs. Phylogenetic analysis identifies MARVs that are similar to the Angola strain. These results provide evidence of MARV circulation in West Africa and demonstrate the value of pathogen surveillance to identify previously undetected threats.


Asunto(s)
Quirópteros/virología , Marburgvirus/aislamiento & purificación , África Occidental , Animales , Cuevas , Genoma Viral , Geografía , Funciones de Verosimilitud , Enfermedad del Virus de Marburg/virología , Marburgvirus/clasificación , Marburgvirus/genética , Filogenia , Análisis de Secuencia de ADN , Proteínas Virales/metabolismo
5.
Int J Integr Care ; 17(4): 1, 2017 Jul 12.
Artículo en Inglés | MEDLINE | ID: mdl-28970759

RESUMEN

INTRODUCTION: During the past two decades, HIV and Sexual and Reproductive Health services in Namibia have been provided in silos, with high fragmentation. As a consequence of this, quality and efficiency of services in Primary Health Care has been compromised. METHODS: We conducted an operational research (observational pre-post study) in a public health facility in Namibia. A health facility assessment was conducted before and after the integration of health services. A person-centred integrated model was implemented to integrate all health services provided at the health facility in addition to HIV and Sexual and Reproductive Health services. Comprehensive services are provided by each health worker to the same patients over time (longitudinality), on a daily basis (accessibility) and with a good external referral system (coordination). Prevalence rates of time flows and productivity were done. RESULTS: Integrated services improved accessibility, stigma and quality of antenatal care services by improving the provider-patient communication, reducing the time that patients stay in the clinic in 16% and reducing the waiting times in 14%. In addition, nurse productivity improved 85% and the expected time in the health facility was reduced 24% without compromising the uptake of TB, HIV, outpatient, antenatal care or first visit family planning services. Given the success on many indicators resulting from integration of services, the goal of this paper was to describe "how" health services have been integrated, the "process" followed and presenting some "results" from the integrated clinic. CONCLUSIONS: Our study shows that HIV and SRH services can be effectively integrated by following the person-centred integrated model. Based on the Namibian experience on "how" to integrate health services and the "process" to achieve it, other African countries can replicate the model to move away from the silo approach and contribute to the achievement of Universal Health Coverage.

6.
Curr HIV/AIDS Rep ; 12(2): 196-206, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25929961

RESUMEN

Southern Africa is the region worst affected by HIV in the world and accounts for one third of the global burden of HIV. Achieving the UNAIDS 90-90-90 target by 2020 and ending the AIDS epidemic by 2030 depend on success in this region. We review epidemiological trends in each country in southern Africa with respect to the prevalence, incidence, mortality, coverage of anti-retroviral therapy (ART) and TB notification rates, to better understand progress in controlling HIV and TB and to determine what needs to be done to reach the UNAIDS targets. Significant progress has been made in controlling HIV. In all countries in the region, the prevalence of HIV in people not on ART, the incidence of HIV, AIDS-related mortality and, in most countries, TB notification rates, are falling. In some countries, the risk of infection began to fall before biomedical interventions such as ART became widely available as a result of effective prevention measures or people's awareness of, and response to, the epidemic but the reasons for these declines remain uncertain. Some countries have achieved better levels of ART coverage than others, but all are in a position to reach the 2020 and 2030 targets if they accelerate the roll-out of ART and of targeted prevention efforts. Achieving the HIV treatment targets will further reduce the incidence of HIV-related TB, but efforts to control TB in HIV-negative people must be improved and strengthened.


Asunto(s)
Erradicación de la Enfermedad , Infecciones por VIH/epidemiología , VIH/patogenicidad , África Austral/epidemiología , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/prevención & control , Humanos
7.
Int Health ; 7(1): 26-31, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25316706

RESUMEN

BACKGROUND: In May 2012, the twice-yearly Maternal and Child Health Week (MCHW) integrated vitamin A supplementation (VAS) and supplementary measles vaccination to reach all children 6-59 months in Sierra Leone. Following the MCHW, a post event coverage survey was conducted to validate VAS coverage and assess adverse events following immunization. METHODS: Using the WHO Expanded Program on Immunization sampling methodology, 30 clusters were randomly selected using population proportionate to size sampling. Fourteen caregivers of children 6-59 months were interviewed per cluster for precision of ±5%. Responses were collected via mobile phones using EpiSurveyor. RESULTS: Overall VAS and measles coverage was 91.9% and 91.6%, respectively, with no significant differences by age group, sex, religion or occupation. Major reasons given for not receiving VAS and measles vaccination were not knowing about the MCHW or being out of the area. Significantly more mild adverse events (fever, pain at injection site) were reported via the post event coverage survey (29.1%) than MCHW (0.01%) (p<0.0001). CONCLUSION: The MCHW reached >90% of children in Sierra Leone with equitable coverage. Increased reporting of mild adverse events during the survey may be attributed to delayed onset after measles vaccination and/or direct inquiry from enumerators. Even mild adverse events following immunization requires strengthened reporting during and after vaccination campaigns.


Asunto(s)
Promoción de la Salud/métodos , Programas de Inmunización/estadística & datos numéricos , Vacuna Antisarampión/administración & dosificación , Sarampión/prevención & control , Deficiencia de Vitamina A/prevención & control , Vitamina A/administración & dosificación , Protección a la Infancia/tendencias , Preescolar , Análisis por Conglomerados , Suplementos Dietéticos , Humanos , Lactante , Recién Nacido , Difusión de la Información , Bienestar Materno/tendencias , Sierra Leona/epidemiología , Deficiencia de Vitamina A/epidemiología
8.
Glob Health Sci Pract ; 1(2): 172-9, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25276530

RESUMEN

BACKGROUND: In Sierra Leone, children ages 6-59 months receive twice-yearly vitamin A supplementation (VAS) through Maternal and Child Health Week (MCHW) events. VAS coverage in 2011 was calculated using government tally sheets of vitamin A capsule distribution and outdated population projections from the 2004 census. We conducted a national post-event coverage (PEC) survey to validate coverage and inform strategies to reach universal coverage of VAS in Sierra Leone. METHODOLOGY: Immediately following the November 2011 MCHW event, we conducted a national PEC survey by interviewing caregivers with children ages 6-59 months using a randomized 30X30 cluster design (N = 900). We also interviewed one health worker and one community health worker in each cluster to determine their knowledge about VAS (N = 60). RESULTS: VAS coverage was 91.8% among children ages 6-59 months, which was lower than the 105.1% reported through tally sheets. Coverage was high and equitable among all districts and between age groups (98.5% for infants ages 6-11 months and 90.5% for children ages 12-59 months). Major reasons for not receiving VAS were that the child was out of the area (42.4%), the household was not visited by community health workers (28.0%), and the caretaker was not aware of the event (11.9%). CONCLUSION: Twice-yearly delivery of VAS through MCHW events achieved consistently high and equitable coverage in Sierra Leone. Universal coverage may be achieved through continued focus on communication and targeted outreach to hard-to-reach areas during the MCHWs.

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