(S (S (S (NP (BASENP (NN Production)) (PP (IN of) (BASENP (JJ antiviral) (NNS vaccines)))) (VP (VBZ has) (VP (VBN been) (ADJP (ADJP (JJR slower)) (SBAR (IN than) (S (VP (ADVP (RB initially)) (VBN predicted)))))))) (CONJP (COMMA ,) (CC and)) (S (BASENP (PRP it)) (VP (VBZ is) (ADJP (JJ likely) (SBAR (IN that) (S (S (NP (NP (BASENP (DT the) (NNP US) (NN government) (POS 's)) (NNS targets)) (PP (IN for) (BASENP (NN delivery)))) (VP (VP (MD wo) (RB n't)) (VP (VB be) (VP (VBN met) (PP (IN by) (BASENP (NN drug) (NNS makers))))))) (COMMA ,) (PP (VBG according) (PP (TO to) (NP (BASENP (NNP Thomas) (NNP Frieden)) (COMMA ,) (NP (BASENP (DT the) (NN director)) (PP (IN of) (NP (BASENP (DT the) (NNS Centers)) (PP (IN for) (BASENP (NNP Disease) (NNP Control) (CC and) (NNP Prevention))))))))))))))) (PERIOD .))