(S (S (NP (BASENP (NNS Incidents)) (PP (IN of) (BASENP (DT the) (NN disease)))) (VP (VBP are) (VP (VBN expected) (S (VP (TO to) (VP (VB peak) (PP (IN in) (BASENP (NNP June) (CC and) (NNP July))))))))) (PERIOD .))