This is a Phase IV randomized, double-blinded, placebo-controlled study in 1000 individuals aged 18 years or older, with community acquired pneumonia (CAP) who meet all eligibility criteria in endemic regions. This study is designed to provide data on the effectiveness of early antifungal treatment (Fluconazole, 400 mg/day) for coccidioidomycosis pneumonia (also referred to as Valley Fever (VF) Pneumonia or acute onset valley fever) vs. placebo in subjects with coccidioidomycosis pneumonia. Patients who are prescribed antibacterials by their health care provider for acute CAP will be randomized to receive either placebo or 400 mg/day of fluconazole for 42 days. The primary objective is to assess the clinical response of early empiric antifungal therapy with fluconazole at Day 22 in subjects with coccidioidomycosis pneumonia and are compliant with the study intervention.