Ikhithi ihloselwe ukutholwa kwamasosha omzimba e-IgM egazini lomuntu ngokumelene namagciwane amaningi abangela izifo zokuphefumula.Iqondene ngqo neMycoplasma Pneumonia, Chlamydia Pneumonia, Respiratory Syncytial Virus, Adenovirus, kanye neCoxsackievirus Group B.