The Ultimate Guide to Candida parapsilosis

Candida parapsilosis is a yeast species with a distinctive talent: it thrives on plastic and silicone surfaces. This makes it a leading cause of infections associated with urinary catheters, central venous lines, and other indwelling medical devices (Trofa et al., 2008).

Unlike C. albicans, which invades tissue using filamentous hyphae, C. parapsilosis relies on its ability to form thick, sticky biofilms on artificial surfaces. These biofilms are difficult for both the immune system and antifungal drugs to penetrate, which is why catheter-associated C. parapsilosis infections are notoriously persistent.

Why C. parapsilosis matters for UTIs

Symptoms

Symptoms are consistent with other Candida UTIs: burning, urgency, frequency, and pelvic discomfort. A distinguishing clinical clue is a UTI that develops during or shortly after hospitalisation, particularly if a catheter was used.

Who is most at risk?

• Patients with urinary catheters – the single biggest risk factor for C. parapsilosis UTIs
• Neonates in NICU – premature and low-birth-weight infants are particularly vulnerable; C. parapsilosis is a leading cause of neonatal candidaemia
• Post-surgical patients – even short-term catheterisation during surgery can introduce the organism
• Patients receiving parenteral nutrition – lipid-rich IV solutions support C. parapsilosis growth
• People with prosthetic devices – joint replacements, heart valves, and other implants provide surfaces for biofilm formation

C. parapsilosis in South Africa

C. parapsilosis is a healthcare-associated pathogen that affects patients across South Africa's private and public hospital systems – and is particularly relevant to the country's neonatal care landscape.

In private healthcare and affluent communities

South Africa's private hospitals perform a high volume of elective surgeries – joint replacements, cosmetic procedures, caesarean sections – all of which involve temporary catheterisation. C. parapsilosis can colonise a catheter within hours, and removal of the device is frequently necessary alongside antifungal treatment. For patients who develop UTI symptoms in the days or weeks following any procedure that involved a catheter, fungal causes should be considered alongside bacterial ones. Private NICUs also see C. parapsilosis as a leading cause of neonatal bloodstream infections in premature infants.

In public healthcare and lower-income communities

In public hospitals, longer catheter dwell times, shared equipment, and higher patient-to-nurse ratios increase the risk of C. parapsilosis transmission. This species is notable for being transmitted on the hands of healthcare workers – a risk amplified in overcrowded wards. South Africa's maternal health facilities, where catheterisation is common during complicated deliveries, are another setting where C. parapsilosis can be introduced.

For travellers and foreign nationals in South Africa

South Africa is a growing destination for medical tourism – dental work, cosmetic surgery, and fertility treatment are all popular. Any procedure involving hospitalisation, anaesthesia, or catheterisation carries a risk of healthcare-associated Candida infection. If you develop urinary symptoms after a medical procedure in SA, Epicentre's walk-in UTI panel can identify whether a healthcare-associated species like C. parapsilosis is the cause – no referral letter needed, results delivered digitally wherever you are.

Epicentre's UTI PCR panel