Monotherapy Versus Bitherapy in Non-severe Hospitalized Community-acquired Pneumonia

Inclusion Criteria: * Age \>=18 years * New infiltrate on chest X-ray, unexplained by another disease process * Presence of at least two of the following findings suggestive of pneumonia: fever or hypothermia, new or increasing cough, sputum production, pleuritic chest pain, tachypnea, dyspnea or focal signs on chest examination * Need for hospitalization as defined by the emergency physician in charge of the patient Exclusion Criteria: * Allergy to one of the study drugs * Pregnancy * Severe immunosuppression * Recent (\<14 d) hospitalization, or currently hospitalized since \> 48 hours * Residency in a nursing home * Previous use of more than 24 hours of any antibiotic * Severe community-acquired pneumonia