O le pusa e faʻamoemoe mo le suʻeina o IgM antibodies i le toto o le tagata e faasaga i le tele o faʻamaʻi pipisi e mafua ai faʻamaʻi pipisi.E patino mo Mycoplasma Pneumonia, Chlamydia Pneumonia, Respiratory Syncytial Virus, Adenovirus, ma Coxsackievirus Group B.
