In 2016 The WHO (World Health Organization) declares that “More than 80% of people living in urban areas that monitor air pollution are exposed to air quality levels that exceed the WHO limits”.
Several sources of air pollutant: from PM to bacteria
In cities, population is exposed to several pollution sources such as Primary Particulate Matter (PM2.5, PM10…) or volatile organic compounds (VOCs). Either in the street  or in the subway , city dwellers are exposed to diverse sources of contaminations. Even if PM is one of the biggest source of pollution, bio-aerosols do not have to be forgotten. Some studies  show that the local airborne bacteria may adapt to the pollution they are exposed. This implies great potential for the use of airborne bacteria in biomonitoring of local air pollution and for bioremediation purposes.
Dedicated air sampler to perform high efficient collection
Same as for any particles, specific air samplers such as the Coriolis® Micro, are designed to collect bio-aerosols with a high air flow rate and a very good collection efficiency. The Coriolis® Micro is a system dedicated to the contamination monitoring of airborne bio-particles. The goal is to propose a sampling method compatible with any type of downstream analysis: Culture , PCR , Microscopy , in order to get reliable and specific data. The Coriolis® Micro allows providing more information than only cultivable flora and reducing the current time-to-results. This instrument is frequently used on research protocols ensuring a fast and efficient collection method.
Furthermore, microbial communities in the air is little known. Performing a review of the bacterial and fungal communities in air is a good solution to better understand the population exposure and health consequences.
 Evaluating exposure of pedestrians to airborne contaminants associated with non-potable water use for pavement cleaning
 Study Of Airborne Bacteria And Their Relation To Air Pollutants
 Bioaerosols in the Barcelona subway system