CD4 and HIV-1 infection: A 54-year-old male, diagnosed with HIV-1 infection 8 years earlier, was well controlled on Atripla (efavirenz 600 mg/emtricitabine 200 mg/tenofovir disoproxil 245 mg) with CD4 count 370 cells/mm3 and viral load <40 copies/ml presented with fever, weight loss and shortness of breath.