{'fraction_non_alphanumeric': 0.010714285714285714, 'fraction_numerical': 0.017857142857142856, 'mean_word_length': 6.10126582278481, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Virological and serological aspects of the Dutch polio epidemic in 1992].

During the 1992 poliovirus type 3 outbreak in the Netherlands virological and serological investigations were conducted. No molecular epidemiological link was traced between poliovirus type 3 that caused the outbreak of poliomyelitis in the Netherlands and isolates from previous epidemics investigated. Serological neutralization assessments indicate that the inactivated poliomyelitis vaccine used in the Dutch national immunization schedule induces immunity to the causative agent.