Okwamanje, izigameko zomkhuhlane wezinyoni othinte abantu zimbalwa kakhulu ukuthi zingakwazi ukukhuluma ngemithi yokwelapha ehambisanayo. Kodwa-ke, izingxenye ezithathwe ezitshalweni zingabonisa isenzo se-antiviral. Ukuze sithole, kwakuzodingeka siwahlole.