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Fungi in water pose great risk to immune-compromised individuals

24 July 2023 | Story André Damons | Photo Supplied

Yeast and other filamentous fungi, which pose a great risk to the health of immune-compromised or suppressed individuals, can be found in various drinking water sources such as ground, spring, surface, and tap water. These opportunistic pathogens may cause severe to fatal infections and can range from superficial to bloodstream or systemic infections.

This is according to Tyla Baker, a postgraduate student in the Department of Microbiology and Biochemistry at the University of the Free State (UFS). She is studying for her MSc degree in Microbiology under the supervision Prof Carlien Pohl-Albertyn, National Research Forum (NRF) SARChI Research Chair in Pathogenic Yeasts. Prof Jacobus Albertyn and Dr Jolly Musoke are her co-supervisors.

Baker says the fungi in the water highlights that current water treatment processes are not efficient in their removal from water destined for household use. “These infections may not be harmful to people with healthy immune systems, but do pose a great risk to the health of immune-compromised or suppressed individuals.

Definite possibility to contract fungal infections from polluted water

“As the number of people with immune systems that are less functional (e.g. premature babies, elderly persons, people with cancer, diabetes or other serious diseases, HIV+ persons, transplant patients) increases, the number of people at risk of fungal infection also increases,” says Baker.

According to Baker, a previous study done in Brazil has identified yeast in bottled mineral water as well as municipally supplied tap water. The potential risk to contract fungal infections from polluted water sources is a definite possibility but more research is required to fully understand and determine the level of risk and the extent of its effects, she says. In the context of Mangaung, it is a concern that untreated water from sewage works as well as other sewage often leaks into the environment (as evidenced by numerous recent articles in local newspapers). These waters are potential carriers of large numbers of pathogens (including pathogenic yeasts/fungi) that may increase the risk to people coming into contact with it.

Baker says there is a good chance people are consuming these kinds of micro-organisms daily, considering that yeast and other filamentous fungi can also form biofilms inside pipes and spread as the impact of water flow dislodges these cells. “People will not even be aware that they are consuming these micro-organisms, some fungi are considered nuisance microbes and may cause a change in the smell and taste of water which may act as an indicator that the water is contaminated, but tests would be needed to confirm this,” she says.

The effects of consuming these fungi are still a grey area of research since the full extent of the consumption of yeast is still unknown, but there are studies being conducted to elucidate the full impact of this occurrence, says Baker. The risk depends on the immune status of the person, the specific species of yeast/fungus ingested, and the number of cells/spores ingested.

Culture-dependent and independent methods

“It is important to know that many pathogenic yeasts and other fungi are opportunistic pathogens, meaning they infect individuals whose immune systems are compromised due to various reasons such as illness (HIV/AIDS, cancer, TB etc.), undergoing organ transplants or even something as simple as using antimicrobial agents such as antibiotics.

“Taking this into account, along with the HIV/AIDS statistics in South Africa, which has a prevalence rate of 13,7% with approximately 8,2 million people in 2021 living with HIV, these individuals are more susceptible to infection by these opportunistic pathogens. Some of these pathogenic yeasts are also multidrug resistant or show resistance to readily available antifungals, such as fluconazole, which hinders the ability of healthcare professionals to efficiently treat infections to avoid fatal/severe outcomes,” explains Baker.

For her studies, she will be testing for fungi in water by using a combination of culture-dependent and independent methods to try and identify yeast present in wastewater. Baker says culture-dependent techniques will include culturing (growing) yeast on an appropriate medium while culture-independent techniques will include more intricate molecular work in the form of a multiplex PCR (polymerase chain reaction) which will enable her to identify an array of pathogenic yeasts present in samples.

According to Baker, people can stay safe by boiling water before drinking it, although temperatures above 100°C are required to kill most harmful microbes. Regular cleaning of shower heads and faucets help to prevent build-up which may act as a surface to which fungi will attach to and grow. Another way to stay safe is to maintain and regularly inspect water filters for damage and avoid contact with untreated sewage.

News Archive

Student leaders 2012/13 announced

2012-08-30

Ready for the task - Sabelo Khumalo, SRC President of the Qwaqwa Campus and William Clayton, SRC President of the Bloemfontein Campus.
Photo: Johan Roux
31 August 2012

The 2012/13 elections for the Student Representative Councils (SRC) of the University of the Free State were completed successfully and show meaningful support for the changes in student governance adopted by students across campuses over the past two years.

The SRC elections at the Qwaqwa Campus were completed on 23 August 2012, while the elections at our Bloemfontein Campus took place on 27 and 28 August 2012.

The SRC Elections at our Bloemfontein Campus showed a voter turnout of 4516 votes (30.8%), with the elections at the Qwaqwa Campuses showing 1753 votes (46%) – both campuses reached the required quorums and the IEA (Bloemfontein Campus) and IEC (Qwaqwa Campus) declared the elections free and fair and announced the results as a true reflection of the will of the student bodies at the campuses.

The full SRC at Bloemfontein Campus now consists of 62% black and 38% white, and 53% female and 47% male members.

In the Qwaqwa elections, SADESMO achieved 46, 38% of the vote, with SASCO, PASMA and NASMO each achieving 30,23% and 8,39% and 14,26%, respectively.

The successful elections at Bloemfontein Campus show that the detailed transformation of student governance introduced by students at the Campus in 2010 and adopted by the university in 2011, succeeded in mobilizing greater participation of students in governance and representation. These changes in the main included a shift to independent candidacy for elective portfolios (12 seats) and organizational candidacy in nine sub-councils that holds ex officio seats on the SRC. Changes also included the establishment of student representative seats in faculty governance and management forums and the adoption of a reviewed Central SRC Constitution. Ex officio seats hold full and equal constitutional authority in the SRC.

Students at Qwaqwa Campus introduced additional portfolios to its SRC, including ex-officio seats for academic affairs, arts and culture, commuter students, Rag Community Service, religious affairs, residences and sports.

A joint sitting of the Campus SRCs will establish the Central SRC 2012/13 on 9 September 2012.

As a further opportunity for participation in and the development of student governance and representation, the current Central SRC herewith also announces its recent adoption of a student governance advisory programme, namely the UFS Student Elders Council (SEC).

The SEC is established as a combined programme between the Central SRC and the Dean of Student Affairs and will consist of selected senior student leaders from all campuses who completed their terms of office, apply and are appointed to the Elders Council by the Central SRC.

The Council will serve as an advisory structure to the Central SRC and other student structures in support of the continuous development of student governance and representation of the student body at the university.

The SEC will advise the Central SRC to be constituted following the constitution of the respective Campus SRCs.

The SRC members at the Bloemfontein Campus are:

President: Mr William Clayton

Vice-President: Mr Bonolo Thebe

Secretary: Ms Karis-Robin Topkin

Treasurer: Mr Pieter Coetzee

Arts & Culture: Ms Chanmari Erasmus

Accessibility & Student Support: Ms Gene McCaskill

First-generation Students: Ms Tanya Calitz

Legal and Constitutional Affairs: Ms Nokuthula Sithole

Media, Marketing & Liaison: Ms Neo Chere

Sport: Mr Tshepo Moloi

Student Development & Environmental Affairs: Ms Thabisile Mgadi

Transformation: Ms Koketso Mofokeng

Dialogue & Ex officio: Associations Council: Mr Anesu Ruswa

Academic Affairs & Ex officio: Academic Affairs Council: Ms Nombuso Ndlovu

Residence Affairs & Ex officio: Residences Council: Mr Johann Steyn

City Residence Affairs & Ex officio: Commuter Council: Mr Michael van Niekerk

Postgraduate Affairs & Ex officio: Postgraduate Council: Mr Fadeyi Akinsuyi

International Affairs & Ex officio: International Council: Ms Tumelo Moreri

Student Media Affairs & Ex officio: Media Council: Mr Jamal-Dean Grootboom

RAG Community Service & Ex officio: RAG Fundraising Council: Mr Jaco Faul

RAG Community Service & Ex officio: RAG Community Service Council: Ms Keneue Mahloana

The SRC members at the Qwaqwa Campus are:

President General: Mr S Khumalo

Deputy President: Mr P T Lenka

Secretary General: Mr D Khethang

Treasurer General: Mr S I Sithole

Media & Publicity: Mr S N Ntombela

Politics & Transformation: Tbc

Student Development & Evironmental Affairs: Tbc Academic Affairs: Mr T Molawude

Arts & Cultural Affairs: Mr T Nkohli

Off-Campus Students: Mr B Mtshali

RAG, Community Service & Dialogue: Ms S F Mlotya

Religious Affairs: Ms D C Khau

Residence & Catering Affairs: Ms Z Mzolo

Sports Council: Mr S Mngomezulu

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