Scientists warn they give a false sense of security because no test is good enough to rule out an infection in someone who doesn't have symptoms, and they don't prevent them picking up the virus on their way home from the test. Scientists warn they give a false sense of security because no test is good enough to rule out an infection in someone who doesn't have symptoms, and they don't prevent them picking up the virus on their way home from the test. But they shouldn't have shut it in the first place. But they shouldn't have shut it in the first place. But they said they had not yet been alerted as to whether they tested positive or negative.
no one knows if the virus is or not going to shows symptoms.
( z0 know :ARG0 ( z1 no-one ) :ARG1 ( z2 or :op ( z3 show :ARG0 ( z4 virus ) :ARG1 ( z5 symptom ) ) :op ( z6 show :ARG0 z4 :ARG1 z5 :polarity - ) ) )
(z0 / know-01
    :ARG0 (z1 / no-one)
    :ARG1 (z2 / or
              :op1 (z3 / show-01
                       :ARG0 (z4 / virus)
                       :ARG1 (z5 / symptom))
              :op2 (z6 / show-01
                       :ARG0 z4
                       :ARG1 z5
                       :polarity -)))
no one knows if the virus is or not going to shows symptoms .
z0 :ARG0 z1
z0 :ARG1 z2
z2 :op1 z3
z3 :ARG0 z4
z6 :polarity 0
z2 :op2 z6
z6 :ARG0 z4
z6 :ARG1 z5
z3 :ARG1 z5