Questions of origins and questions of disease control are not the same thing once human-to-human transmission has become common, said Deborah Seligsohn, an expert in environment and public health at Villanova University. For example, scientists never confirmed the origin of smallpox before the disease was eradicated through a global vaccination program. In the case of Severe Acute Respiratory Syndrome (SARS)  a disease caused by a beta coronavirus, like the current coronavirus  researchers first identified the virus in February 2003. From a public health perspective, if a virus has transitioned to being spread mostly by human-to-human contact, discovering its origins is not as essential to strategies for containing the disease. WHAT DO SCIENTISTS BELIEVE ABOUT VIRUS ORIGINS?
the agent is unsure of the origin of the disease but knows very much about the vaccin for separating it from original hawks.
( z0 have-concession :ARG1 ( z1 know :ARG0 ( z2 agent ) :ARG1 ( z3 much :degree ( z4 very ) :topic ( z5 vaccin :purpose ( z6 separate :ARG1 ( z7 disease ) :ARG2 ( z8 hawk :mod ( z9 original ) ) ) ) ) ) :ARG2 ( z10 sure :ARG0 z2 :ARG1 ( z11 originate :ARG1 z7 ) :polarity - ) )
(z0 / have-concession-91
    :ARG1 (z1 / know-01
              :ARG0 (z2 / agent)
              :ARG1 (z3 / much
                        :degree (z4 / very)
                        :topic (z5 / vaccin
                                   :purpose (z6 / separate-01
                                                :ARG1 (z7 / disease)
                                                :ARG2 (z8 / hawk
                                                          :mod (z9 / original))))))
    :ARG2 (z10 / sure-02
               :ARG0 z2
               :ARG1 (z11 / originate-01
                          :ARG1 z7)
               :polarity -))
the agent is unsure of the origin of the disease but knows very much about the vaccin for separating it from original hawks .
z10 :polarity 0
z10 :ARG0 z2
z10 :ARG1 z11
z11 :ARG1 z7
z0 :ARG2 z10
z0 :ARG1 z1
z1 :ARG0 z2
z3 :degree z4
z1 :ARG1 z3
z3 :topic z5
z5 :purpose z6
z6 :ARG1 z7
z8 :mod z9
z6 :ARG2 z8