What microbe is in Bronchitis?

Bronchitis is a common respiratory tract infection that can be caused by a variety of microorganisms, including bacteria, viruses, and fungi. The most common cause of bronchitis is a viral infection, such as the influenza virus or the common cold virus. Bacterial infections, such as Streptococcus pneumoniae or Haemophilus influenzae, can also cause bronchitis. In some cases, bronchitis may be caused by fungi, such as Aspergillus or Candida.