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Prospective Surveillance of Primary Healthcare Presentations for Scabies and Bacterial Skin Infections in Fiji, 2018-2019.

ABSTRACT: Scabies, impetigo, and other skin and soft tissue infections (SSTIs) are highly prevalent in many tropical, low-middle income settings, but information regarding their burden of disease is scarce. We conducted surveillance of presentations of scabies and SSTIs, including impetigo, abscesses, cellulitis, and severe SSTI, to primary health facilities in Fiji. We established a monthly reporting system over the course of 50 weeks (July 2018-June 2019) for scabies and SSTIs at all 42 public primary health facilities in the Northern Division of Fiji (population, ≈131,914). For each case, information was collected regarding demographics, diagnosis, and treatment. There were 13,736 individual primary healthcare presentations with scabies, SSTI, or both (108.3 presentations per 1000 person-years; 95% confidence interval [CI], 106.6-110 presentations). The incidence was higher for males than for females (incidence rate ratio [IRR], 1.15; 95% CI, 1.11-1.19). Children younger than 5 years had the highest incidence among all age groups (339.1 per 1000 person-years). The incidence was higher among the iTaukei (indigenous) population (159.9 per 1000 person-years) compared with Fijians of Indian descent (30.1 per 1000 person-years; IRR, 5.32; 95% CI, 5.03-5.61). Abscess was the condition with the highest incidence (63.5 per 1,000 person-years), followed by scabies (28.7 per 1,000 person-years) and impetigo (21.6 per 1,000 person-years). Scabies and SSTIs impose a substantial burden in Fiji and represent a high incidence of primary health presentations in this population. The incidence in low-middle income settings is up to 10-times higher than that in high-income settings. New public health strategies and further research are needed to address these conditions.

SUBMITTER: Thean LJ

PROVIDER: S-EPMC8274759 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundScabies is recognised as a major public health problem in many countries, and is responsible for significant morbidity due to secondary bacterial infection of the skin causing impetigo, abscesses and cellulitis, that can in turn lead to serious systemic complications such as septicaemia, kidney disease and, potentially, rheumatic heart disease. Despite the apparent burden of disease in many countries, there have been few large-scale surveys of scabies prevalence or risk factors. We undertook a population-based survey in Fiji of scabies and impetigo to evaluate the magnitude of the problem and inform public health strategies.Methodology/principal findingsA total of 75 communities, including villages and settlements in both urban and rural areas, were randomly selected from 305 communities across the four administrative divisions, and all residents in each location were invited to participate in skin examination by trained personnel. The study enrolled 10,887 participants. The prevalence of scabies was 23.6%, and when adjusted for age structure and geographic location based on census data, the estimated national prevalence was 18.5%. The prevalence was highest in children aged five to nine years (43.7%), followed by children aged less than five (36.5%), and there was also an indication of prevalence increasing again in older age. The prevalence of scabies was twice as high in iTaukei (indigenous) Fijians compared to Indo-Fijians. The prevalence of impetigo was 19.6%, with a peak in children aged five to nine years (34.2%). Scabies was very strongly associated with impetigo, with an estimated 93% population attributable risk.ConclusionsAs far as we are aware, this is the first national survey of scabies and impetigo ever conducted. We found that scabies occurs at high levels across all age groups, ethnicities, and geographical locations. Improved strategies are urgently needed to achieve control of scabies and its complications in endemic communities.

Project description:Rotavirus A (RVA) vaccines succeeded in lowering the burden of acute gastroenteritis (AGE) worldwide, especially preventing severe disease and mortality. In 2019, Brazil completed 13 years of RVA vaccine implementation (Rotarix™) within the National Immunization Program (NIP), and as reported elsewhere, the use of Rotarix™ in the country has reduced childhood mortality and morbidity due to AGE. Even though both marketed vaccines are widely distributed, the surveillance of RVA causing AGE and the monitoring of circulating genotypes are important tools to keep tracking the epidemiological scenario and vaccines impact. Thus, our study investigated RVA epidemiological features, viral load and G and P genotypes circulation in children and adults presenting AGE symptoms in eleven states from three out of five regions in Brazil. By using TaqMan®-based one-step RT-qPCR, we investigated a total of 1536 stool samples collected from symptomatic inpatients, emergency department visits and outpatients from January 2018 to December 2019. G and P genotypes of RVA-positive samples were genetically characterized by multiplex RT-PCR or by nearly complete fragment sequencing. We detected RVA in 12% of samples, 10.5% in 2018 and 13.7% in 2019. A marked winter/spring seasonality was observed, especially in Southern Brazil. The most affected age group was children aged >24-60 months, with a positivity rate of 18.8% (p < 0.05). Evaluating shedding, we found a statistically lower RVA viral load in stool samples collected from children aged up to six months compared to the other age groups (p < 0.05). The genotype G3P[8] was the most prevalent during the two years (83.7% in 2018 and 65.5% in 2019), and nucleotide sequencing of some strains demonstrated that they belonged to the emergent equine-like G3P[8] genotype. The dominance of an emergent genotype causing AGE reinforces the need for continuous epidemiological surveillance to assess the impact of mass RVA immunization as well as to monitor the emergence of novel genotypes.

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Prospective Surveillance of Primary Healthcare Presentations for Scabies and Bacterial Skin Infections in Fiji, 2018-2019.

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