There are several tools available to evaluate health websites. Most of them list criteria that reliable websites should meet. Here is a summary of the main criteria.
Health
Criteria for Health Care–Associated Pneumonia
Health care-associated pneumonia has been categorized as a discrete entity, with the goal of identifying patients with pneumonia that develops outside the hospital yet is caused by pathogens usually associated with hospital-acquired pneumonia or even ventilator-associated pneumonia, including methicillin-resistant Staphylococcus aureus (MRSA) and multidrug-resistant (MDR) gram-negative pathogens.