The first section contains reviews on the most common and epidemiologically important respiratory viruses, such as influenza virus, severe acute respiratory system coronavirus, and recently discovered Middle East respiratory syndrome coronavirus.

The second section is devoted to bacterial and fungal pathogens, which discusses etiology and pathogenesis including infections in patients with compromised immune system, and infections caused by fungal pathogens, such as Aspergillus and Pneumocystis.

The third section incorporates treatment approaches against different types of bacterial infections of the lower respiratory tract. This section reviews classical antimicrobial and phytomedical approaches as well as the application of nanotechnology against respiratory pathogens.

• Offers the most up to date information on the microbiology of lower respiratory system infections
• Features contributors from across the world, presenting questions of interest to readers of both developed and developing countries
• Reviews the most common and epidemiologically important respiratory viruses
• Discusses the etiology and pathogenesis of bacterial and fungal pathogens including infections in patients with compromised immune system, and infections caused by fungal pathogens, such as Aspergillus and Pneumocystis