Table 2.
Antiviral activities of EP at noncytotoxic concentrations.
| Virus | Relevant properties | Susceptible to EPethanol extracts (+ or –) | Susceptible to EP aqueous extracts (+ or –) |
|---|---|---|---|
| Rhinoviruses | ss RNA, no membrane | + only at high conc. | + only at high conc. |
| Influenza viruses | segmented RNA, + membrane & 2 target virion proteins (HA, NA) | + | + |
| Respiratory syncytial virus | ss RNA, + membrane & fusion protein | + | nt |
| Coronavirus | ss RNA + membrane | + (mouse virus) | nt |
| Calicivirus | ss RNA, no membrane | + high conc. | + high conc. |
| Poliovirus | ss RNA, no membrane | – | – |
| Herpes viruses | ds DNA + membrane | + | + |