The key importance of the immunity, including by vaccines, for the organism survival, is well known. However, for escape of any eventual non-wished side effects in risk cases as for instance, in patients with auto-immune diseases and disorders or in patients with cardio-vascular pathologies, together with development of strategies for generation of adequate anti-viral immunity, also strategies for suppression of the virus by appropriate siRNAs against respective virus genes in the viral genome should also be developed at the same time, as maximally safe novel method, for escape of eventual toxic side effects, characteristic for the most of the known chemical anti-viral drugs.