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28 September 2020 | Story Andre Damons | Photo Supplied
Dr Martin Nyaga, Senior Lecturer and Researcher: NGS, will be heading the World Health Organisation Collaborating Centre (WHO CC).
The University of the Free State (UFS) has been designated a World Health Organisation Collaborating Centre (WHO CC), and the university’s Next Generation Sequencing (NGS) Unit, in partnership with the World Health Organisation (WHO), will for the next four years be conducting genome sequencing of pathogenic organisms, including rotavirus strains from the African continent. 

This centre will be part of the Vaccine Preventable Diseases (VPD) Pathogens Genomics Cluster and will run from September 2020 to September 2024. 

Dr Martin Nyaga, Senior Lecturer and Researcher: NGS/Virology, who will be heading the WHO CC, says an institution is designated as a WHO CC by the WHO Director-General and endorsed by the host country’s minister of health to form part of an international collaborative network, carrying out activities in support of the WHO programmess at all levels. A designation as a WHO CC is a time-limited agreement of collaboration between WHO and the designated institution, through which the latter agrees to implement a series of concrete activities, specifically designed for WHO.

A supreme achievement

Says Dr Nyaga: “In my opinion, a WHO CC designation is one of the supreme achievements an institution can be conferred as a recognition for foregoing exceptional collaborative venture with the WHO and showing future potential to assist the WHO with its global programmes and in our case, the WHO Regional Office for Africa region to offer solutions to the WHO VPD Surveillance and pathogens genomics cluster.”

According to Dr Nyaga this designation was awarded to the UFS after the WHO was content with the outcome of a service contract whereby the UFS-NGS unit undertook a pilot rotavirus surveillance project at whole genome level, using two African countries for the pilot, Rwanda and Zambia.

“From the outcomes of the pilot surveillance project between 2017 and 2019, the WHO/AFRO was satisfied with the genomic data that was generated and partially disseminated in scientific databases and journals as a collaborative venture. 

“It was thus proposed to strengthen its existing collaboration with the UFS-NGS Unit, which initiated the application process to designate the UFS-NGS unit as a WHO CC, an initiative that has taken approximately 20 months to finalise through the different phases of the application and approvals for the designation,” explains Dr Nyaga.

The purpose of the WHO CC

The new WHO CC will upon request by the WHO, implement agreed work plans in a timely manner and to the highest possible standards of quality and must comply with the referred terms of reference and conditions. These include: 
• Conducting genome sequencing of pathogenic organisms causing VPD, including rotavirus strains collected as part of the routine VPD surveillance using NGS technology and analysis of the generated datasets using bioinformatics tools.

• Conducting molecular characterisation of specimens collected during outbreaks and public health emergencies as part of the support for monitoring, preparedness and response to VPD disease outbreaks in Africa.

• Provide technical guidance to WHO on strategies to improve laboratory molecular diagnostics, molecular typing and NGS of rotavirus diarrheal strains and other enteropathogens to detect novel and re-emerging strains. 

• Conduct validation of tools and new molecular diagnostics for detection and characterisation of unusual or rare VPD strains to guide studies and development of new vaccines for VPD.

• Organise capacity-building and training workshops on whole genome sequencing of priority VPD pathogenic organisms.

The impact of the WHO CC on the work of the UFS-NGS 

According to Dr Nyaga, the designation brings extra responsibilities to his work and to the activities of the UFS-NGS unit. “Such initiatives are very welcome to enhance the business aspects, research and academic activities of the UFS-NGS unit, as the benefits are quite holistic since the collaboration enhances co-ownership of data and offers opportunities to train postgraduate students and other scientists.

“It also expands the research infrastructure and most importantly contributes to policy for numerous African governments in important decisions such as vaccine implementation activities, from an informed point of view and managing public health needs that require rapid response like outbreaks that may lead to pandemics.” 
• The current WHO CC designations at South African Institutions of higher learning and research can be found at: 

News Archive

NRF grants of millions for Kovsie professors
2013-05-20

 

Prof Martin Ntwaeaborwa (left) and Prof Bennie Viljoen
20 May 2013


Two professors received research grants from the National Research Foundation (NRF). The money will be used for the purchase of equipment to add more value to their research and take the university further in specific research fields.

Prof Martin Ntwaeaborwa from the Department of Physics has received a R10 million award, following a successful application to the National Nanotechnology Equipment Programme (NNEP) of the NRF for a high-resolution field emission scanning electron microscope (SEM) with integrated cathodoluminescence (CL) and energy dispersive X-ray spectrometers (EDS).

Prof Bennie Viljoen from the Department of Microbial, Biochemical and Food Biotechnology has also been awarded R1,171 million, following a successful application to the Research Infrastructure Support Programme (RISP) for the purchase of a LECO CHN628 Series Elemental Analyser with a Sulphur add-on module.

Prof Ntwaeaborwa says the SEM-CL-EDS’ state-of-the art equipment combines three different techniques in one and it is capable of analysing a variety of materials ranging from bulk to individual nanoparticles. This combination is the first of its kind in Africa. This equipment is specifically designed for nanotechnology and can analyse particles as small as 5nm in diameter, a scale which the old tungsten SEM at the Centre of Microscopy cannot achieve.

The equipment will be used to simultaneously analyse the shapes and sizes of submicron particles, chemical composition and cathodoluminescence properties of materials. The SEM-CL-EDS is a multi-user facility and it will be used for multi- and interdisciplinary research involving physics, chemistry, materials science, life sciences and geological sciences. It will be housed at the Centre of Microscopy.
“I have no doubt that this equipment is going to give our university a great leap forward in research in the fields of electron microscopy and cathodoluminescence,” Prof Ntwaeaborwa said.

Prof Viljoen says the analyser is used to determine nitrogen, carbon/nitrogen, and carbon/hydrogen/nitrogen in organic matrices. The instrument utilises a combustion technique and provides a result within 4,5 minutes for all the elements being determined. In addition to the above, the machine also offers a sulphur add-on module which provides sulphur analysis for any element combination. The CHN 628 S module is specifically designed to determine the sulphur content in a wide variety of organic materials such as coal and fuel oils, as well as some inorganic materials such as soil, cement and limestone.

The necessity of environmental protection has stimulated the development of various methods, allowing the determination of different pollutants in the natural environment, including methods for determining inorganic nitrogen ions, carbon and sulphur. Many of the methods used so far have proven insufficiently sensitive, selective or inaccurate. The availability of the LECO analyser in a research programme on environmental pollution/ food security will facilitate accurate and rapid quantification of these elements. Ions in water, waste water, air, food products and other complex matrix samples have become a major problem and studies are showing that these pollutants are likely to cause severe declines in native plant communities and eventually food security.

“With the addition of the analyser, we will be able to identify these polluted areas, including air, water and land pollution, in an attempt to enhance food security,” Viljoen said. “Excess levels of nitrogen and phosphorous wreaking havoc on human health and food security, will be investigated.”

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