Mandana Sadat Mirhosseini - BSc, Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Kosar Heydari - BSc, Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Arash Abednezhad - MSc, Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Dibachehr Rahmani - BSc, Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Nastarn Aghari Moghaddam - PhD, Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Nima Faraji - MSc, Department of Biology, Central Tehran Branch, Islamic Azad University, Tehran, Iran

Background: The current narrative review aims to describe microbial agents causing pneumonia briefly. In addition, the ongoing review tries to introduce the diagnostic methods from biochemical to molecular tests used routinely and the promising molecular methods which will be used in near future.Methods: PubMed was searched for all review and original articles related to the lung infection. Studies providing insights into clinical symptoms, microbiology, risk factors, and diagnosis were included.Rasult & Conclusion: Untreated respiratory infections are one of the most common health care problems worldwide. We tried to provide a collective view of new aspects of bacteriology and diagnosis methodology of lung infection detection.

Respiratory infection, Pneumonia, Molecular diagnosis, Multiplex PCR