( ( The virus ) ( ( will spread ) . ) )
(ROOT (S (NP (DT The) (NN virus)) (VP (MD will) (VP (VB spread))) (. .)))
The virus will spread.
(ROOT (S (NP (NNP Tamiflu)) (VP (VBZ inhibits) (NP (NP (NN spread)) (PP (IN of) (NP (NN virus))))) (. .)))