Catriona L. Halliday is an Infectious Disease Specialist based in Westmead, NSW. You’ll find the practice at Level 3, ICPMR, Darcy Road, Westmead 2145.
Catriona looks after people with infections that can be tricky to diagnose and treat. These can include serious fungal infections, and infections that happen more easily when someone’s immune system is under strain, or after a transplant.
In many cases, care involves helping work out what’s causing symptoms like fever, ongoing cough, breathing trouble, chest pain, severe headaches, confusion, or feeling very unwell. At times, infections can also affect the brain and the nervous system, such as meningitis or encephalitis.
Common problems seen in this clinic include aspergillosis, cryptococcosis, and mucormycosis. There can also be Pneumocystis jirovecii pneumonia, which is often linked with reduced immunity. Catriona also helps with infections like nocardiosis and lung infections, including pulmonary nocardiosis, as well as longer-term lung issues such as bullae.
She also manages infections beyond the lungs. This can include endocarditis, kidney transplant-related infections, and sepsis. There are times when bacteria and fungi can both be part of the story, and getting the right plan matters for safety.
Catriona may be involved when someone has agranulocytosis, or when blood counts and immunity are affected. She can also help with skin and soft tissue infections, including ringworm and fungal nail infections, and conditions such as chromoblastomycosis and mycetoma.
The approach is practical and focused on getting people through a rough patch safely. Over time, that can mean steady follow-up, clear advice about what to watch for, and working closely with other health professionals involved in care.
Because infectious diseases can change quickly, early assessment and good communication are a big part of the work. If you’re dealing with an infection that isn’t settling, or you’re worried it could be something more serious, Catriona can help work out the next steps.