Review VIRAL RESPIRATORY CO-INFECTIONS. IMPORTANCE OF NEWLY DISCOVERED VIRUSES IN PAEDIATRIC RESPIRATORY PATHOLOGIES Vişan Angelica 1, 2, Luminos Monica 1, 2, Jugulete G. 1, 2, Negulescu Cristina 1, Drăgănescu Anca 1, Bilasco Anuţa 1, Matei March 1, 2012