Actually systemic candida is more common than you might think. There are lots more people other than those with aids who have compromised immune systems. I have chronic fatigue immune dsyfunction sydrome and have a compromised immune system. There are more people with CFIDS than with AIDS in the US. I have a systemic candida infection that I have been dealing with for many years. It's not been until recently when I have been dealing with my immune system issues that I have been able to get it under control.
Also people with chronic lyme disease who have to take many months of Antibiotics frequently get systemic candida. And cancer patients undergoing chemo will also get it at times.
These are only examples I can think of right now. There are others that I have read about over the past year.
If you think you have a systemic candida issue, if you have chronic sinus infections, itchy ears and eyes, you should consider whether you have immune system issues as well.