( ( As ( preventive measures ) ) ( , ( ( attenuated ( live ( virus vaccines ) ) ) ( ( are available ) . ) ) ) )
(ROOT (S (PP (IN As) (NP (JJ preventive) (NNS measures))) (, ,) (NP (JJ attenuated) (JJ live) (NN virus) (NNS vaccines)) (VP (VBP are) (ADJP (JJ available))) (. .)))
As preventive measures, attenuated live virus vaccines are available.
(ROOT (S (NP (NNP Vaccine)) (VP (VBZ is) (NP (NP (DT a) (JJ preventative) (NN measure)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADVP (RB often)) (VP (VBN delivered) (PP (IN by) (NP (NN injection))) (PP (IN into) (NP (DT the) (NN arm))))))))) (. .)))