(S (BASENP (DT The) (NNP WHO)) (VP (VBD said) (SBAR (IN that) (QT (DQL ``) (QTC (S (SBAR (IN while) (S (NP (NN data) (BASENP (NN collection) (CC and) (NN verification))) (VP (VP (VP (VBP remain) (BASENP (DT a) (NN challenge))) (PP (IN throughout) (BASENP (DT the) (NN country)))) (PP (IN with) (NP (BASENP (DT the) (NN effect)) (SBAR (IN that) (S (BASENP (JJ weekly) (NNS statistics)) (VP (VP (VBP are) (RB not)) (ADJP (ADVP (RB always)) (ADJP (JJ accurate) (CC or) (JJ complete))))))))))) (COMMA ,) (S (NP (BASENP (DT the) (JJ overall) (NN trend)) (PP (IN over) (BASENP (DT the) (JJ last) (NN 2) (NNS months)))) (VP (VBZ is) (PP (IN of) (NP (BASENP (DT a) (JJ decreasing) (NN number)) (PP (IN of) (BASENP (NNS cases) (CC and) (NNS deaths)))))))) (PERIOD .)) (DQR '')))))