<prompt> The following diagnostic tests are useful for corresponding purposes, EXCEPT:Ziehl -Neelsen staining - Detection of mycobacteriaImmunofluorescence - Detection of Influenza virusSpecific IgM antibodies - Immunity against RubellaSpecific IgM antibodies - Detection of acute infection  <response>: Ziehl Neelsen is used for Mycobacterial detection. Rapid diagnosis of influenza is made by demonstration of viral antigen on the surface of nasopharyngeal cells by immunofluorescence. IgM antibodies are antibodies of primary response so it indicates acuterecent infection. Its production signify that immune response of individual is proper but does not mean that person has immunity against infection. Ref: Harrisons Principles of Internal Medicine, 18th Edition, Chapter 193 