Figure 2.  Network of interactions between virus and bacteria in the upper respiratory tract. Figure 1A in van den Bergh et al. [26] used under the Creative Commons Attribution License. Green lines indicate synergistic associations and red lines indicate antagonistic associations. Solid lines indicate associations with P < 0.01 and dashed lines indicate associations with P between 0.01 and 0.05 for associations between species. enterovirus (EV), H. influenzae (HI), human adenovirus human (HAdV), bocavirus (HBoV), human coronavirus (HCov), human parechovirus (HPeV), human rhinovirus (HRV), influenza virus (IV), M. catarrhalis (MC), S. aureus (SA), S. pneumoniae (SP) and WU polyomavirus (WUPyV)