Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2019800418', 'doi': 'https://doi.org/10.1016/0140-6736(92)93086-3', 'title': 'Protective efficacy of a serogroup B meningococcal vaccine in Sao Paulo, Brazil', 'display_name': 'Protective efficacy of a serogroup B meningococcal vaccine in Sao Paulo, Brazil', 'publication_year': 1992, 'publication_date': '1992-10-01', 'ids': {'openalex': 'https://openalex.org/W2019800418', 'doi': 'https://doi.org/10.1016/0140-6736(92)93086-3', 'mag': '2019800418', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/1357461'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/0140-6736(92)93086-3', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S49861241', 'display_name': 'The Lancet', 'issn_l': '0140-6736', 'issn': ['0140-6736', '1474-547X'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5101975223', 'display_name': 'José Cássio de Moraes', 'orcid': 'https://orcid.org/0000-0003-4512-662X'}, 'institutions': [{'id': 'https://openalex.org/I4210121739', 'display_name': 'Ministry of Health', 'ror': 'https://ror.org/02y7p0749', 'country_code': 'BR', 'type': 'government', 'lineage': ['https://openalex.org/I4210121739']}], 'countries': ['BR'], 'is_corresponding': False, 'raw_author_name': 'J. Cassio de Moraes', 'raw_affiliation_strings': ['Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil'], 'affiliations': [{'raw_affiliation_string': 'Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil', 'institution_ids': ['https://openalex.org/I4210121739']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5002191548', 'display_name': 'Maria Cláudia Corrêa Camargo', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210121739', 'display_name': 'Ministry of Health', 'ror': 'https://ror.org/02y7p0749', 'country_code': 'BR', 'type': 'government', 'lineage': ['https://openalex.org/I4210121739']}], 'countries': ['BR'], 'is_corresponding': False, 'raw_author_name': 'M.C.C. Camargo', 'raw_affiliation_strings': ['Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil'], 'affiliations': [{'raw_affiliation_string': 'Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil', 'institution_ids': ['https://openalex.org/I4210121739']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5022849683', 'display_name': 'Neuma T. Hidalgo', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210121739', 'display_name': 'Ministry of Health', 'ror': 'https://ror.org/02y7p0749', 'country_code': 'BR', 'type': 'government', 'lineage': ['https://openalex.org/I4210121739']}], 'countries': ['BR'], 'is_corresponding': False, 'raw_author_name': 'N.T. Rossetto Hidalgo', 'raw_affiliation_strings': ['Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil'], 'affiliations': [{'raw_affiliation_string': 'Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil', 'institution_ids': ['https://openalex.org/I4210121739']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5050034388', 'display_name': 'Helena Aparecida Barbosa', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210121739', 'display_name': 'Ministry of Health', 'ror': 'https://ror.org/02y7p0749', 'country_code': 'BR', 'type': 'government', 'lineage': ['https://openalex.org/I4210121739']}], 'countries': ['BR'], 'is_corresponding': False, 'raw_author_name': 'H. Aparecida Barbosa', 'raw_affiliation_strings': ['Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil'], 'affiliations': [{'raw_affiliation_string': 'Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil', 'institution_ids': ['https://openalex.org/I4210121739']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5017287372', 'display_name': 'Vera Lúcia Gattás', 'orcid': 'https://orcid.org/0000-0001-5032-4570'}, 'institutions': [{'id': 'https://openalex.org/I4210121739', 'display_name': 'Ministry of Health', 'ror': 'https://ror.org/02y7p0749', 'country_code': 'BR', 'type': 'government', 'lineage': ['https://openalex.org/I4210121739']}], 'countries': ['BR'], 'is_corresponding': False, 'raw_author_name': 'V.L. Gattas', 'raw_affiliation_strings': ['Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil'], 'affiliations': [{'raw_affiliation_string': 'Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil', 'institution_ids': ['https://openalex.org/I4210121739']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5006217952', 'display_name': 'Hanna Vasconcelos', 'orcid': 'https://orcid.org/0000-0002-6753-9372'}, 'institutions': [{'id': 'https://openalex.org/I4210121739', 'display_name': 'Ministry of Health', 'ror': 'https://ror.org/02y7p0749', 'country_code': 'BR', 'type': 'government', 'lineage': ['https://openalex.org/I4210121739']}], 'countries': ['BR'], 'is_corresponding': False, 'raw_author_name': 'H.de.G. Vasconcelos', 'raw_affiliation_strings': ['Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil'], 'affiliations': [{'raw_affiliation_string': 'Epidemiologic Surveillance Center, Sao Paulo State Department of Health, Sao Paulo, Brazil', 'institution_ids': ['https://openalex.org/I4210121739']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5003524601', 'display_name': 'Cláudio Tavares Sacchi', 'orcid': 'https://orcid.org/0000-0002-5686-7979'}, 'institutions': [{'id': 'https://openalex.org/I2799912023', 'display_name': 'Instituto Adolfo Lutz', 'ror': 'https://ror.org/02wna9e57', 'country_code': 'BR', 'type': 'government', 'lineage': ['https://openalex.org/I2799912023']}], 'countries': ['BR'], 'is_corresponding': False, 'raw_author_name': 'C. Tavares Sacchi', 'raw_affiliation_strings': ['Adolfo Lutz Institute, Sao Paulo State Department of Health, Sao Paulo, Brazil'], 'affiliations': [{'raw_affiliation_string': 'Adolfo Lutz Institute, Sao Paulo State Department of Health, Sao Paulo, Brazil', 'institution_ids': ['https://openalex.org/I2799912023']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5047806090', 'display_name': 'I.M. Land Gral', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I2799912023', 'display_name': 'Instituto Adolfo Lutz', 'ror': 'https://ror.org/02wna9e57', 'country_code': 'BR', 'type': 'government', 'lineage': ['https://openalex.org/I2799912023']}], 'countries': ['BR'], 'is_corresponding': False, 'raw_author_name': 'I.M. Land Gral', 'raw_affiliation_strings': ['Adolfo Lutz Institute, Sao Paulo State Department of Health, Sao Paulo, Brazil'], 'affiliations': [{'raw_affiliation_string': 'Adolfo Lutz Institute, Sao Paulo State Department of Health, Sao Paulo, Brazil', 'institution_ids': ['https://openalex.org/I2799912023']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5051228915', 'display_name': 'Bradley A. Perkins', 'orcid': 'https://orcid.org/0009-0003-4542-2805'}, 'institutions': [{'id': 'https://openalex.org/I4210160401', 'display_name': 'National Center for Infectious Diseases', 'ror': 'https://ror.org/04vmke174', 'country_code': 'US', 'type': 'facility', 'lineage': ['https://openalex.org/I1289490764', 'https://openalex.org/I1299022934', 'https://openalex.org/I4210160401']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'B.A. Perkins', 'raw_affiliation_strings': ['Meningitis and Special Pathogens Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control, Atlanta, Georgia, U.S.A.'], 'affiliations': [{'raw_affiliation_string': 'Meningitis and Special Pathogens Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control, Atlanta, Georgia, U.S.A.', 'institution_ids': ['https://openalex.org/I4210160401']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5028920342', 'display_name': 'J D Wenger', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210160401', 'display_name': 'National Center for Infectious Diseases', 'ror': 'https://ror.org/04vmke174', 'country_code': 'US', 'type': 'facility', 'lineage': ['https://openalex.org/I1289490764', 'https://openalex.org/I1299022934', 'https://openalex.org/I4210160401']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'J.D. Wenger', 'raw_affiliation_strings': ['Meningitis and Special Pathogens Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control, Atlanta, Georgia, U.S.A.'], 'affiliations': [{'raw_affiliation_string': 'Meningitis and Special Pathogens Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control, Atlanta, Georgia, U.S.A.', 'institution_ids': ['https://openalex.org/I4210160401']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5014246647', 'display_name': 'Brian D. Plikaytis', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210160401', 'display_name': 'National Center for Infectious Diseases', 'ror': 'https://ror.org/04vmke174', 'country_code': 'US', 'type': 'facility', 'lineage': ['https://openalex.org/I1289490764', 'https://openalex.org/I1299022934', 'https://openalex.org/I4210160401']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'B.D. Plikaytis', 'raw_affiliation_strings': ['Biostatistics and Information Management Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control, Atlanta, Georgia, U.S.A.'], 'affiliations': [{'raw_affiliation_string': 'Biostatistics and Information Management Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control, Atlanta, Georgia, U.S.A.', 'institution_ids': ['https://openalex.org/I4210160401']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5001808358', 'display_name': 'Claire V. Broome', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210091794', 'display_name': 'Office of the Director', 'ror': 'https://ror.org/00fj8a872', 'country_code': 'US', 'type': 'other', 'lineage': ['https://openalex.org/I1299022934', 'https://openalex.org/I1299303238', 'https://openalex.org/I4210091794']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'C.V. Broome', 'raw_affiliation_strings': ['Office of the Director, Centers for Disease Control, Atlanta, United States'], 'affiliations': [{'raw_affiliation_string': 'Office of the Director, Centers for Disease Control, Atlanta, United States', 'institution_ids': ['https://openalex.org/I4210091794']}]}], 'countries_distinct_count': 2, 'institutions_distinct_count': 4, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 6830, 'currency': 'USD', 'value_usd': 6830, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 7.289, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 374, 'citation_normalized_percentile': {'value': 0.989291, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 99, 'max': 100}, 'biblio': {'volume': '340', 'issue': '8827', 'first_page': '1074', 'last_page': '1078'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10873', 'display_name': 'Epidemiology and Pathogenesis of Bacterial Meningitis', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2404', 'display_name': 'Microbiology'}, 'field': {'id': 'https://openalex.org/fields/24', 'display_name': 'Immunology and Microbiology'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10873', 'display_name': 'Epidemiology and Pathogenesis of Bacterial Meningitis', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2404', 'display_name': 'Microbiology'}, 'field': {'id': 'https://openalex.org/fields/24', 'display_name': 'Immunology and Microbiology'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, {'id': 'https://openalex.org/T10654', 'display_name': 'Management and Epidemiology of Pneumonia', 'score': 0.9994, 'subfield': {'id': 'https://openalex.org/subfields/2713', 'display_name': 'Epidemiology'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, {'id': 'https://openalex.org/T11551', 'display_name': 'Management and Epidemiology of Infective Endocarditis', 'score': 0.989, 'subfield': {'id': 'https://openalex.org/subfields/2713', 'display_name': 'Epidemiology'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/meningococcal-vaccine', 'display_name': 'Meningococcal vaccine', 'score': 0.7231888}, {'id': 'https://openalex.org/keywords/meningococcal-meningitis', 'display_name': 'Meningococcal meningitis', 'score': 0.6415213}, {'id': 'https://openalex.org/keywords/meningococcal-infections', 'display_name': 'Meningococcal Infections', 'score': 0.5184181}, {'id': 'https://openalex.org/keywords/neisseria-meningitidis', 'display_name': 'Neisseria meningitidis', 'score': 0.51684}], 'concepts': [{'id': 'https://openalex.org/C2780454893', 'wikidata': 'https://www.wikidata.org/wiki/Q6817090', 'display_name': 'Meningococcal vaccine', 'level': 4, 'score': 0.7231888}, {'id': 'https://openalex.org/C159047783', 'wikidata': 'https://www.wikidata.org/wiki/Q7215', 'display_name': 'Virology', 'level': 1, 'score': 0.64726996}, {'id': 'https://openalex.org/C2908838209', 'wikidata': 'https://www.wikidata.org/wiki/Q890785', 'display_name': 'Meningococcal meningitis', 'level': 4, 'score': 0.6415213}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.5936475}, {'id': 'https://openalex.org/C2776645655', 'wikidata': 'https://www.wikidata.org/wiki/Q890785', 'display_name': 'Meningococcal disease', 'level': 4, 'score': 0.5688764}, {'id': 'https://openalex.org/C2910632749', 'wikidata': 'https://www.wikidata.org/wiki/Q890785', 'display_name': 'Meningococcal Infections', 'level': 5, 'score': 0.5184181}, {'id': 'https://openalex.org/C2778458888', 'wikidata': 'https://www.wikidata.org/wiki/Q154625', 'display_name': 'Neisseria meningitidis', 'level': 3, 'score': 0.45375207}, {'id': 'https://openalex.org/C203014093', 'wikidata': 'https://www.wikidata.org/wiki/Q101929', 'display_name': 'Immunology', 'level': 1, 'score': 0.2872283}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.17549568}, {'id': 'https://openalex.org/C2780801004', 'wikidata': 'https://www.wikidata.org/wiki/Q1415366', 'display_name': 'Immunization', 'level': 3, 'score': 0.16774005}, {'id': 'https://openalex.org/C159654299', 'wikidata': 'https://www.wikidata.org/wiki/Q79460', 'display_name': 'Antibody', 'level': 2, 'score': 0.16219345}, {'id': 'https://openalex.org/C523546767', 'wikidata': 'https://www.wikidata.org/wiki/Q10876', 'display_name': 'Bacteria', 'level': 2, 'score': 0.0}, {'id': 'https://openalex.org/C54355233', 'wikidata': 'https://www.wikidata.org/wiki/Q7162', 'display_name': 'Genetics', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D001428', 'descriptor_name': 'Bacterial Vaccines', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D004196', 'descriptor_name': 'Disease Outbreaks', 'qualifier_ui': 'Q000517', 'qualifier_name': 'prevention & control', 'is_major_topic': True}, {'descriptor_ui': 'D008589', 'descriptor_name': 'Meningococcal Infections', 'qualifier_ui': 'Q000517', 'qualifier_name': 'prevention & control', 'is_major_topic': True}, {'descriptor_ui': 'D014611', 'descriptor_name': 'Vaccination', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D000328', 'descriptor_name': 'Adult', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D001425', 'descriptor_name': 'Bacterial Outer Membrane Proteins', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D001938', 'descriptor_name': 'Brazil', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D001938', 'descriptor_name': 'Brazil', 'qualifier_ui': 'Q000453', 'qualifier_name': 'epidemiology', 'is_major_topic': False}, {'descriptor_ui': 'D016022', 'descriptor_name': 'Case-Control Studies', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D002648', 'descriptor_name': 'Child', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D002675', 'descriptor_name': 'Child, Preschool', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D004196', 'descriptor_name': 'Disease Outbreaks', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005260', 'descriptor_name': 'Female', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007223', 'descriptor_name': 'Infant', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008297', 'descriptor_name': 'Male', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008589', 'descriptor_name': 'Meningococcal Infections', 'qualifier_ui': 'Q000453', 'qualifier_name': 'epidemiology', 'is_major_topic': False}, {'descriptor_ui': 'D008589', 'descriptor_name': 'Meningococcal Infections', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D022401', 'descriptor_name': 'Meningococcal Vaccines', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D009345', 'descriptor_name': 'Neisseria meningitidis', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012189', 'descriptor_name': 'Retrospective Studies', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/0140-6736(92)93086-3', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S49861241', 'display_name': 'The Lancet', 'issn_l': '0140-6736', 'issn': ['0140-6736', '1474-547X'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/1357461', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'id': 'https://metadata.un.org/sdg/3', 'display_name': 'Good health and well-being', 'score': 0.79}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 13, 'referenced_works': ['https://openalex.org/W1510773753', 'https://openalex.org/W1648810964', 'https://openalex.org/W1784744653', 'https://openalex.org/W1845075647', 'https://openalex.org/W2035189752', 'https://openalex.org/W2044099387', 'https://openalex.org/W2049463023', 'https://openalex.org/W2167896356', 'https://openalex.org/W2178685600', 'https://openalex.org/W2485447266', 'https://openalex.org/W2963874641', 'https://openalex.org/W4237172269', 'https://openalex.org/W4285719527'], 'related_works': ['https://openalex.org/W4387115080', 'https://openalex.org/W4246281681', 'https://openalex.org/W4230979920', 'https://openalex.org/W2912732318', 'https://openalex.org/W2736018792', 'https://openalex.org/W2405842676', 'https://openalex.org/W2167142248', 'https://openalex.org/W2098917732', 'https://openalex.org/W2070553347', 'https://openalex.org/W2006699036'], 'abstract_inverted_index': {'<h2>Abstract</h2>': [0], 'Serogroup': [1], 'B': [2, 38, 54, 93, 180], '<i>Neisseria': [3], 'meningitidis</i>': [4], 'is': [5], 'the': [6, 79, 82, 170], 'most': [7], 'common': [8], 'cause': [9], 'of': [10, 26, 81, 91, 114, 178], 'epidemic': [11, 36], 'meningococcal': [12, 39, 55, 94, 181], 'disease': [13, 40, 95, 182], 'in': [14, 41, 84, 183], 'developed': [15], 'countries.': [16], 'Until': [17], 'recently': [18], 'no': [19], 'vaccine': [20, 56, 83, 131, 136, 172], 'has': [21], 'been': [22], 'available': [23], 'for': [24, 176], 'prevention': [25, 177], 'infection': [27], 'with': [28, 129], 'this': [29], 'organism.': [30], 'In': [31], 'an': [32], 'attempt': [33], 'to': [34, 59, 68, 77, 148, 151, 155, 164], 'control': [35], 'serogroup': [37, 53, 92, 179], 'greater': [42, 85], 'Sao': [43, 86], 'Paulo,': [44], 'Brazil,': [45], 'during': [46], '1989': [47], 'and': [48, 106, 120, 125, 157, 186], '1990,': [49, 119], 'a': [50, 74], 'Cuban-produced': [51, 171], 'outer-membrane-protein-based': [52], 'was': [57, 110], 'given': [58], 'about': [60], '2·4': [61], 'million': [62], 'children': [63, 185], 'aged': [64], 'from': [65], '3': [66], 'months': [67, 142], '6': [69], 'years.': [70], 'We': [71], 'have': [72], 'done': [73], 'case-control': [75], 'study': [76], 'estimate': [78], 'efficacy': [80, 137], 'Paulo.': [87], 'Microbiologically': [88], 'confirmed': [89, 111, 130], 'cases': [90], 'were': [96, 102, 133], 'identified': [97], 'through': [98], 'hospital-based': [99], 'surveillance.': [100], 'Controls': [101], 'matched': [103, 127], 'by': [104, 112, 139], 'neighbourhood': [105], 'age.': [107], 'Vaccination': [108], 'status': [109, 132], 'inspection': [113], 'vaccination': [115], 'cards.': [116], 'Between': [117], 'June,': [118, 121], '1991,': [122], '112': [123], 'patients': [124], '409': [126], 'controls': [128], 'enrolled.': [134], 'Estimated': [135], 'varied': [138], 'age:': [140], '48': [141], 'or': [143], 'older=74%': [144], '(95%': [145], 'Cl': [146], '16': [147], '92%),': [149], '24': [150, 160], '47': [152], 'months=47%': [153], '(-72': [154], '84%),': [156], 'less': [158], 'than': [159], 'months=-': [161], '37%': [162], '(<-100': [163], '73%).': [165], 'Our': [166], 'results': [167], 'suggest': [168], 'that': [169], 'may': [173], 'be': [174], 'effective': [175], 'older': [184], 'adults.': [187]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2019800418', 'counts_by_year': [{'year': 2024, 'cited_by_count': 2}, {'year': 2023, 'cited_by_count': 5}, {'year': 2022, 'cited_by_count': 3}, {'year': 2021, 'cited_by_count': 4}, {'year': 2020, 'cited_by_count': 5}, {'year': 2019, 'cited_by_count': 5}, {'year': 2018, 'cited_by_count': 6}, {'year': 2017, 'cited_by_count': 6}, {'year': 2016, 'cited_by_count': 9}, {'year': 2015, 'cited_by_count': 14}, {'year': 2014, 'cited_by_count': 11}, {'year': 2013, 'cited_by_count': 11}, {'year': 2012, 'cited_by_count': 15}], 'updated_date': '2024-09-11T00:02:30.117469', 'created_date': '2016-06-24'}