Contact us at letters@time.com. She laughed. Breakthroughs can offer a unique wellspring of data. Others are hesitant. Once it hits its stride, in a single day the virus grows from hundreds of virus particles in the nose, to billions.
There have also been concerns about the effects of the virus on humans.
( z0 concern :ARG0 ( z1 affect :ARG0 ( z2 virus ) :ARG1 ( z3 human ) ) :mod ( z4 also ) )
(z0 / concern-01
    :ARG0 (z1 / affect-01
              :ARG0 (z2 / virus)
              :ARG1 (z3 / human))
    :mod (z4 / also))
There have also been concerns about the effects of the virus on humans .
z0 :mod z4
z0 :ARG0 z1
z1 :ARG0 z2
z1 :ARG1 z3