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High Genetic Similarity of MRSA ST88 Isolated From Pigs and Humans in Kogi State, Nigeria.

ABSTRACT: We determined the prevalence and genetic characteristics of methicillin-resistant Staphylococcus aureus (MRSA) isolated from pigs and humans between September 2013 and February 2015 in Kogi State, a central region in Nigeria. A total of 680 nasal swabs were collected and analyzed from pigs (n = 425) and "pig-contact" humans (n = 55) on 35 farms, and "non-pig-contact" humans (n = 200). MRSA was recovered from 20 (4.7%) pigs on 12 farms and 18 (7.0%) humans. Six (2.4%) of the human isolates were recovered from "pig-contact" humans, of which only three work on farms also harboring MRSA positive pigs. All 38 MRSA were resistant to ?-lactams only, belonged to spa type t1603, sequence type (ST) 88, and mecA was associated with a SCCmec IVa element. Four isolates from a pig, a pig-contact human from the same farm, a pig-contact human from a pig farm in a different district, and a non-pig-contact human were subjected to whole genome sequencing (WGS). Core genome SNP analysis revealed high genetic similarity between strains (3-11 SNP differences), despite the temporal (2 year gap) and geographic (165 km) differences between isolates. Furthermore, these Nigerian isolates form a distinct clade when compared to other African MRSA ST88 isolates. All but one porcine strain was positive for scn suggesting a possible human origin and that pigs were either transiently contaminated by humans or result of a very recent human-to-pig transmission event. To our knowledge, this is the first report of genetically confirmed MRSA in pigs in Nigeria, which appear to be a typical CA-MRSA clone present in the human population.

SUBMITTER: Otalu OJ

PROVIDER: S-EPMC6305073 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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High Genetic Similarity of MRSA ST88 Isolated From Pigs and Humans in Kogi State, Nigeria.

Otalu Otalu Jnr OJ Kwaga Jacob K P JKP Okolocha Emmanuel Chukuwdi EC Islam Md Zohorul MZ Moodley Arshnee A

Frontiers in microbiology 20181217

We determined the prevalence and genetic characteristics of methicillin-resistant Staphylococcus aureus (MRSA) isolated from pigs and humans between September 2013 and February 2015 in Kogi State, a central region in Nigeria. A total of 680 nasal swabs were collected and analyzed from pigs (n = 425) and "pig-contact" humans (n = 55) on 35 farms, and "non-pig-contact" humans (n = 200). MRSA was recovered from 20 (4.7%) pigs on 12 farms and 18 (7.0%) humans. Six (2.4%) ...[more]

PMID: 30619177

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Project description:BACKGROUND:Nigeria has one of the highest child mortality rates in the world, with an estimated 750,000 deaths annually among children under age five. The majority of these deaths are due to pneumonia, malaria, or diarrhea. Many parents do not seek sick-child care from trained, biomedical providers, contributing to this high rate of mortality. METHODS:This qualitative study explores factors enabling or preventing parents from seeking care for sick under-five children in Nigeria's Kogi and Ebonyi states, including gender-related roles and social norms. Interviews were conducted with parents of sick under-five children and service providers, and focus group discussions were held with community leaders to assess how care-seeking behavior was influenced by four modes from the Colvin et al. conceptual framework for household decision-making and pathways to care. These include (1) caregivers' recognition and response to illness, (2) seeking advice and negotiating access within the family, (3) making use of community-based treatment options, and (4) accessing biomedical services. RESULTS:Parents were found to have a general understanding of illness symptoms but did not always attribute illness to biomedical causes. Intra-household decision-making processes were shaped by gender dynamics between men and women, and were found to have great effects on decisions to seek care. Use of traditional medicine and self-treatment were found to be common first steps in treatment before turning to the biomedical care system. Once the decision to seek biomedical care was taken, the route of seeking care varied between seeking care at chemists and then continuing to health facilities or starting with a health facility and then accessing prescriptions from a chemist. CONCLUSION:We conclude that care-seeking decisions do not follow a linear process; that intra-household decision-making processes particularly among parents should not be underestimated in addressing sick-child care seeking; and that, given the role of mothers as primary caregivers, their knowledge in illness recognition and agency in care-seeking decision-making, and seeking biomedical care, is deserving of future study.

Project description:Toxoplasma gondii parasites present strong but geographically varied signatures of population structure. Populations sampled from Europe and North America have commonly been defined by over-representation of a small number of clonal types, in contrast to greater diversity in South America. The occurrence and extent of genetic diversity in African T. gondii populations remains understudied, undermining assessments of risk and transmission. The present study was designed to establish the occurrence, genotype and phylogeny of T. gondii in meat samples collected from livestock produced for human consumption (free-range chickens, n = 173; pigs, n = 211), comparing with T. gondii detected in blood samples collected from seropositive pregnant women (n = 91) in Benue state, Nigeria. The presence of T. gondii DNA was determined using a published nested polymerase chain reaction, targeting the 529 bp multicopy gene element. Samples with the highest parasite load (assessed using quantitative PCR) were selected for PCR-restriction fragment length polymorphism (PCR-RFLP) targeting the surface antigen 3 (SAG3), SAG2 (5' and 3'), beta-tubulin (BTUB) and dense granule protein 6 (GRA6) loci, and the apicoplast genome (Apico). Toxoplasma gondii DNA was detected in all three of the populations sampled, presenting 30.6, 31.3 and 25.3% occurrence in free-range chickens, pigs and seropositive pregnant women, respectively. Quantitative-PCR indicated low parasite occurrence in most positive samples, limiting some further molecular analyses. PCR-RFLP results suggested that T. gondii circulating in the sampled populations presented with a type II genetic background, although all included a hybrid type I/II or II/III haplotype. Concatenation of aligned RFLP amplicon sequences revealed limited diversity with nine haplotypes and little indication of host species-specific or spatially distributed sub-populations. Samples collected from humans shared haplotypes with free-range chickens and/or pigs. Africa remains under-explored for T. gondii genetic diversity and this study provides the first detailed definition of haplotypes circulating in human and animal populations in Nigeria.

Project description:BackgroundFacilitating factors are potential factors that encourage the uptake of maternal health services, while limiting factors are those potential factors that limit women's access to maternal health services. Though cultural norms or values are significant factors that influence health-seeking behaviour, there is a limited exploration of the facilitating and limiting factors of these cultural norms and values on the use of maternal health services in primary health care facilities.AimTo understand the facilitating and limiting factors of cultural values and norms that influence the use of maternal health services in primary healthcare facilities.MethodsThe study was conducted in two primary healthcare facilities (rural and urban) using a focused ethnographic methodology described by Roper and Shapira. The study comprised 189 hours of observation of nine women from the third trimester to deliveries. Using purposive and snowballing techniques, data was collected through 21 in-depth interviews, two focus group discussions comprising 13 women, and field notes. All data was analyzed using the steps described by Roper and Shapira (Ethnography in nursing research, 2000).ResultsUsing the enabler and nurturer constructs of the relationships and the expectations domain of the PEN-3 cultural model, four themes were generated: 1, The attitude of healthcare workers and 2, Factors within primary healthcare facilities, which revealed both facilitating and limiting factors. The remaining themes, 3, The High cost of services, and 4, Contextual issues within communities revealed factors that limit access to facility care.ConclusionSeveral facilitating and limiting factors of cultural norms and values significantly influence women's health-seeking behaviours and use of primary health facilities. Further studies are needed on approaches to harness these factors in providing holistic care tailored to communities' cultural needs. Additionally, reinvigoration and strengthening of primary health facilities in Nigeria is critical to promoting comprehensive care that could reduce maternal mortality and enhance maternal health outcomes.

Dataset Information

High Genetic Similarity of MRSA ST88 Isolated From Pigs and Humans in Kogi State, Nigeria.

Publications

High Genetic Similarity of MRSA ST88 Isolated From Pigs and Humans in Kogi State, Nigeria.

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