If the lack of a normal immune system prevents the symptoms of SARS, it would still be essential to determine whether the patient has the SARS virus. It may not be doing the expected damage, but it might make that patient a very deadly carrier of the disease.
I would certainly want to test these unaffected HIV patients for the presence of the coronavirus.
The index patient [who died] [Amoy Gardens] was a 33-year-old with chronic kidney disease who visited his brother at Amoy Gardens last month. He shed a huge quantity of virus into the sewer system. The index patient [who died] was a 26 yr old who also had chronic kidney disease and diabetes. Both had suppressed immune systems, but both died.