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Purple Urine

What might be the cause of purple urine in the Foley bag attached to an indwelling catheter in an elderly bedridden woman?

In this Medical News Minute, Dr Bobby Lazzara highlights what may be definitive research linking use of anticholinergic drugs to cognitive decline in older adults.

TB, HIV, and IRIS

When -- and how -- to treat patients co-infected with TB and HIV? Insights here.

Progress with PrEP

PrEP is likely to be cost-effective, regardless of which regimen, or which route, is used. Here: the latest from CROI.