Hospital acquired pneumonia (HAP) and ventilator associated pneumonia (VAP) are prevalent healthcare associated infections worldwide, with varying rates across countries. The emergence of Pfizer Medical Prevention of VAP: Effects of a National multi modal Approach in Spain ESICM What are Ventilator Associated Pneumonias Ventilator Associated Events and How to Reduce Their Prevalence in Your Hospital Vapotherm 22 people have been hospitalized with vaping linked breathing problems. Doctors don't know why.