<prompt> Which among the following is known as Eaton agent which causes respiratory infection?CorynebacteriumPseudomonasMycoplasmaStreptococcus  <response>: M. pneumoniae pneumonia is also referred to as Eaton agent pneumonia the organism having first been isolated in the early 1940s by Monroe Eaton, primary atypical pneumonia, and walking pneumonia. A mild tracheobronchitis with fever, cough, headache, and malaise is the most common syndrome associated with acute M pneumoniae infection. The pneumonia is typically less severe than other bacterial pneumonias. It has been described as walking pneumonia because most cases do not require hospitalization. Ref: Hardy R.D. 2012. Chapter 175. Infections Due to Mycoplasmas. In D.L. Longo, A.S. Fauci, D.L. Kasper, S.L. Hauser, J.L. Jameson, J. Loscalzo Eds, Harrisons Principles of Internal Medicine, 18e. 