57 research outputs found
STANDARDS FOR SOCIAL WORK QUALIFICATIONS IN SOUTH AFRICA
South Africa has instituted a new education and training dispensation, with the core drivers being the South African Qualifications Authority (SAQA), National Standards bodies and Education and Training Quality Assurance bodies (Olivier, 1998:ix). The SAQA Act (1995) enables South Africa to develop its own integrated National Qualifications Framework (NQF) accompanied by a supporting quality-assurance syste
CONTINUING PROFESSIONAL DEVELOPMENT (CPD) FOR THE SOCIAL WORK PROFESSION IN SOUTH AFRICA
The South African Council for Social Service Professions (SACSSP) took a principled decisionduring a meeting on 23 and 24 July 2003 to adopt continuing professional development (CPD)as a requirement for registration to practise. This decision has positioned and committed socialservice professions amongst many other professions, nationally and internationally, to continuetheir professional development through “the systematic maintenance and improvement ofknowledge, skills and competence throughout a professional’s working life” (Butler, 2003:18)
Development of a Pan-Filoviridae SYBR green qPCR assay for biosurveillance studies in bats
DATA AVAILABILITY: The data are contained within the article or supplementary materials.SUPPLEMENTARY MATERIALS : TABLE S1: Publically available sequences used for primer design; SUPPLEMENTARY FILE S1: Synthetic constructs sequences, TABLE S2: SYBR Green qPCR results for field samples.Recent studies have indicated that bats are hosts to diverse filoviruses. Currently, no panfilovirus molecular assays are available that have been evaluated for the detection of all mammalian
filoviruses. In this study, a two-step pan-filovirus SYBR Green real-time PCR assay targeting the
nucleoprotein gene was developed for filovirus surveillance in bats. Synthetic constructs were
designed as representatives of nine filovirus species and used to evaluate the assay. This assay
detected all synthetic constructs included with an analytical sensitivity of 3–31.7 copies/reaction
and was evaluated against the field collected samples. The assay’s performance was similar to a
previously published probe based assay for detecting Ebola- and Marburgvirus. The developed
pan-filovirus SYBR Green assay will allow for more affordable and sensitive detection of mammalian
filoviruses in bat samples.National Research Foundation (NRF) of
South Africa.https://www.mdpi.com/journal/virusesMedical Virolog
International External Quality Assessment of Molecular Detection of Rift Valley Fever Virus
Rift Valley fever (RVF) is a viral zoonosis that primarily affects animals resulting in considerable economic losses due to death and abortions among infected livestock. RVF also affects humans with clinical symptoms ranging from an influenza-like illness to a hemorrhagic fever. Over the past years, RVF virus (RVFV) has caused severe outbreaks in livestock and humans throughout Africa and regions of the world previously regarded as free of the virus. This situation prompts the need to evaluate the diagnostic capacity and performance of laboratories worldwide. Diagnostic methods for RVFV detection include virus isolation, antigen and antibody detection methods, and nucleic acid amplification techniques. Molecular methods such as reverse-transcriptase polymerase chain reaction and other newly developed techniques allow for a rapid and accurate detection of RVFV. This study aims to assess the efficiency and accurateness of RVFV molecular diagnostic methods used by expert laboratories worldwide. Thirty expert laboratories from 16 countries received a panel of 14 samples which included RVFV preparations representing several genetic lineages, a specificity control and negative controls. In this study we present the results of the first international external quality assessment (EQA) for the molecular diagnosis of RVF. Optimal results were reported by 64% of the analyses, 21% of the analyses achieved acceptable results and 15% of the results revealed that there is need for improvement. Evenly good performances were achieved by specific protocols which can therefore be recommended as an accurate molecular protocol for the diagnosis of RVF. Other protocols showed uneven performances revealing the need for improved optimization and standardization of these protocols
Yellow Fever Outbreak, Southern Sudan, 2003
In May 2003, an outbreak of fatal hemorrhagic fever, caused by yellow fever virus, occurred in southern Sudan. Phylogenetic analysis showed that the virus belonged to the East African genotype, which supports the contention that yellow fever is endemic in East Africa with the potential to cause large outbreaks in humans
Epidemiology and Molecular Virus Characterization of Reemerging Rabies, South Africa
Late identification of an outbreak of human rabies in Limpopo Province le
Human rabies associated with domestic cat exposures in South Africa, 1983–2018
Rabies is a fatal encephalitic disease caused by lyssaviruses belonging to the family Rhabdoviridae.
At the time of this report, a total of 16 species of lyssaviruses, which included the prototype rabies
virus (RABV), and 2 related but unclassified bat lyssaviruses, Taiwan and Kothalati, had been
recognised by the International Committee on Taxonomy of Viruses (ICTV 2019). Globally RABV,
also referred to as ‘classic rabies’, circulates in natural transmission cycles involving domestic
dogs and various wildlife species. In the Americas, RABV is found in certain insectivorous and
haematophagous bat species (Banyard et al. 2013). The public health burden of rabies is, however,
very closely related to the occurrence of the disease in domestic dogs; thus, human cases of rabies
are mostly reported from areas where dog rabies is uncontrolled (Hampson et al. 2015). An annual
estimation of 59 000 human deaths occur worldwide with 95% of rabies cases occurring in Africa
and Asia (Hampson et al. 2015). In South Africa, RABV circulates both in domestic animals and
wildlife cycles, involving the canid and mongoose variants of the virus (Nel, Thomson & Von
Teichman 1993). The urban cycle involves domestic dogs reported from various locations in the
country, but particularly from the KwaZulu-Natal, Eastern Cape, Limpopo and Mpumalanga
provinces (Cohen et al. 2007; Zulu, Sabeta & Nel 2009). Sylvatic cycles of the canid variant RABV
in bat-eared foxes and black-backed jackal (Zulu et al. 2009) and the mongoose variant RABV in
certain species of mongoose occur in South Africa (Van Zyl, Markotter & Nel 2010). Apart from
the reservoir species, canid and mongoose RABV infections are reported in an array of domestic
and wildlife species in the country, with these animals primarily serving as dead-end hosts (Sabeta
et al. 2018). Laboratory-confirmed human rabies cases in South Africa are predominantly dogmediated,
and seven cases of rabies linked to other domestic species and wildlife have been
reported (Weyer et al. 2011).http://www.jsava.co.zaam2020Medical VirologyVeterinary Tropical Disease
Serum levels of inflammatory cytokines in Rift Valley fever patients are indicative of severe disease
BACKGROUND : Rift Valley fever (RVF) is a mosquito-borne viral zoonosis affecting domestic and wild ruminants,
camels and humans. Outbreaks of RVF are characterized by a sudden onset of abortions and high mortality
amongst domestic ruminants. Humans develop disease ranging from a mild flu-like illness to more severe
complications including hemorrhagic syndrome, ocular and neurological lesions and death. During the RVF
outbreak in South Africa in 2010/11, a total of 278 human cases were laboratory confirmed, including 25 deaths.
The role of the host inflammatory response to RVF pathogenesis is not completely understood.
METHODS : Virus load in serum from human fatal and non-fatal cases was determined by standard tissue culture
infective dose 50 (TCID50) titration on Vero cells. Patient serum concentration of chemokines and cytokines involved
in inflammatory responses (IL-8, RANTES, CXCL9, MCP-1, IP-10, IL-1β, IL-6, IL-10, TNF and IL-12p70) was determined
using cytometric bead assays and flow cytometry.
RESULTS : Fatal cases had a 1-log10 higher TCID50/ml serum concentration of RVF virus (RVFV) than survivors (p < 0.05).
There were no significant sequence differences between isolates recovered from fatal and non-fatal cases. Chemokines
and pro- and anti-inflammatory cytokines were detected at significantly increased (IL-8, CXCL9, MCP-1, IP-10, IL-10) or
decreased (RANTES) levels when comparing fatal cases to infected survivors and uninfected controls, or when
comparing combined infected patients to uninfected controls.
CONCLUSIONS : The results suggest that regulation of the host inflammatory responses plays an important role in the
outcome of RVFV infection in humans. Dysregulation of the inflammatory response contributes to a fatal outcome. The
cytokines and chemokines identified in this study that correlate with fatal outcomes warrant further investigation as
markers for disease severity.The Poliomyelitis Research Foundation (PRF),
grant number 12/10. PJvV is further supported by a grant from the Incentive
Funding for Rated Researchers program of the National Research Foundation
(NRF), South Africa.
This work is based on the research supported in part by the National
Research Foundation of South Africa (Grant specific unique reference
number UID 85544).http://www.virologyj.comam201
Coding-complete genome sequences for two confirmed monkeypox cases in South Africa 2022
DATA AVAILABILITY : The genome sequences for NICD-SVPL223 and NICD-SVPL232 were
submitted to NCBI GenBank (accession numbers ON918611 and ON927248). Raw sequence
data have also been deposited in NCBI (BioProject accession number PRJNA856120 and SRA
accession number SRR19995508 and SRR19995509).The coding-complete genome sequences of monkeypox virus (MPXV) were
obtained from skin lesion swabs from two human cases detected in South Africa in June
2022. Sequence analyses indicated that the genetic sequences of the viruses associated
with these two cases were related most closely to the genetic sequences of other MPXVs
reported during the 2022 multicountry outbreak and belong to the monkeypox hMPXV-1
clade (previously West Africa clade) and B.1 lineage.https://journals.asm.org/journal/mraam2023BiochemistryForestry and Agricultural Biotechnology Institute (FABI)GeneticsMedical VirologyMicrobiology and Plant Patholog
Tanapox, South Africa, 2022
Tanapox is a rarely diagnosed zoonosis known to be
endemic to equatorial Africa. All previously reported
human cases were acquired within 10° north or south
of the Equator, most recently 19 years ago. We describe
a human case of tanapox in South Africa (24°
south of the Equator). Expanded surveillance for this
pathogen is warranted.https://wwwnc.cdc.gov/eid/am2024Veterinary Tropical DiseasesSDG-03:Good heatlh and well-bein
- …