Publication Information

{'id': 'https://openalex.org/W4200167841', 'doi': 'https://doi.org/10.3390/vaccines9121500', 'title': 'Attenuation of Antibody Titers from 3 to 6 Months after the Second Dose of the BNT162b2 Vaccine Depends on Sex, with Age and Smoking Risk Factors for Lower Antibody Titers at 6 Months', 'display_name': 'Attenuation of Antibody Titers from 3 to 6 Months after the Second Dose of the BNT162b2 Vaccine Depends on Sex, with Age and Smoking Risk Factors for Lower Antibody Titers at 6 Months', 'publication_year': 2021, 'publication_date': '2021-12-18', 'ids': {'openalex': 'https://openalex.org/W4200167841', 'doi': 'https://doi.org/10.3390/vaccines9121500', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/34960246'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.3390/vaccines9121500', 'pdf_url': 'https://www.mdpi.com/2076-393X/9/12/1500/pdf?version=1639821475', 'source': {'id': 'https://openalex.org/S4210226234', 'display_name': 'Vaccines', 'issn_l': '2076-393X', 'issn': ['2076-393X'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310310987', 'host_organization_name': 'Multidisciplinary Digital Publishing Institute', 'host_organization_lineage': ['https://openalex.org/P4310310987'], 'host_organization_lineage_names': ['Multidisciplinary Digital Publishing Institute'], 'type': 'journal'}, 'license': 'cc-by', 'license_id': 'https://openalex.org/licenses/cc-by', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'doaj', 'pubmed'], 'open_access': {'is_oa': True, 'oa_status': 'gold', 'oa_url': 'https://www.mdpi.com/2076-393X/9/12/1500/pdf?version=1639821475', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5108762672', 'display_name': 'Yushi Nomura', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I78274823', 'display_name': 'Dokkyo Medical University', 'ror': 'https://ror.org/05k27ay38', 'country_code': 'JP', 'type': 'education', 'lineage': ['https://openalex.org/I78274823']}, {'id': 'https://openalex.org/I4210123464', 'display_name': 'Saiseikai Utsunomiya hospital', 'ror': 'https://ror.org/03a2szg51', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210123464']}, {'id': 'https://openalex.org/I4210137409', 'display_name': 'National Hospital Organization', 'ror': 'https://ror.org/03ntccx93', 'country_code': 'JP', 'type': 'government', 'lineage': ['https://openalex.org/I4210137409']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Yushi Nomura', 'raw_affiliation_strings': ['Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University, Shimotsuga 321-0293, Japan', 'Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University, Shimotsuga 321-0293, Japan', 'institution_ids': ['https://openalex.org/I78274823']}, {'raw_affiliation_string': 'Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan', 'institution_ids': ['https://openalex.org/I4210123464', 'https://openalex.org/I4210137409']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5000622170', 'display_name': 'Michiru Sawahata', 'orcid': 'https://orcid.org/0000-0001-9220-3419'}, 'institutions': [{'id': 'https://openalex.org/I4210123464', 'display_name': 'Saiseikai Utsunomiya hospital', 'ror': 'https://ror.org/03a2szg51', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210123464']}, {'id': 'https://openalex.org/I4210137409', 'display_name': 'National Hospital Organization', 'ror': 'https://ror.org/03ntccx93', 'country_code': 'JP', 'type': 'government', 'lineage': ['https://openalex.org/I4210137409']}, {'id': 'https://openalex.org/I146500386', 'display_name': 'Jichi Medical University', 'ror': 'https://ror.org/010hz0g26', 'country_code': 'JP', 'type': 'education', 'lineage': ['https://openalex.org/I146500386']}], 'countries': ['JP'], 'is_corresponding': True, 'raw_author_name': 'Michiru Sawahata', 'raw_affiliation_strings': ['Department of Medicine, Division of Pulmonary Medicine, Jichi Medical University, Shimotsuke 329-0498, Japan', 'Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan', 'institution_ids': ['https://openalex.org/I4210123464', 'https://openalex.org/I4210137409']}, {'raw_affiliation_string': 'Department of Medicine, Division of Pulmonary Medicine, Jichi Medical University, Shimotsuke 329-0498, Japan', 'institution_ids': ['https://openalex.org/I146500386']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5065120657', 'display_name': 'Yosikazu Nakamura', 'orcid': 'https://orcid.org/0000-0001-6654-1481'}, 'institutions': [{'id': 'https://openalex.org/I146500386', 'display_name': 'Jichi Medical University', 'ror': 'https://ror.org/010hz0g26', 'country_code': 'JP', 'type': 'education', 'lineage': ['https://openalex.org/I146500386']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Yosikazu Nakamura', 'raw_affiliation_strings': ['Department of Public Health, Jichi Medical University, Shimotsuke 329-0498, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Public Health, Jichi Medical University, Shimotsuke 329-0498, Japan', 'institution_ids': ['https://openalex.org/I146500386']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5090071954', 'display_name': 'Ryousuke Koike', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210137409', 'display_name': 'National Hospital Organization', 'ror': 'https://ror.org/03ntccx93', 'country_code': 'JP', 'type': 'government', 'lineage': ['https://openalex.org/I4210137409']}, {'id': 'https://openalex.org/I78274823', 'display_name': 'Dokkyo Medical University', 'ror': 'https://ror.org/05k27ay38', 'country_code': 'JP', 'type': 'education', 'lineage': ['https://openalex.org/I78274823']}, {'id': 'https://openalex.org/I4210123464', 'display_name': 'Saiseikai Utsunomiya hospital', 'ror': 'https://ror.org/03a2szg51', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210123464']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Ryousuke Koike', 'raw_affiliation_strings': ['Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University, Shimotsuga 321-0293, Japan', 'Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan', 'institution_ids': ['https://openalex.org/I4210137409', 'https://openalex.org/I4210123464']}, {'raw_affiliation_string': 'Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University, Shimotsuga 321-0293, Japan', 'institution_ids': ['https://openalex.org/I78274823']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5027939312', 'display_name': 'Otohiro Katsube', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210123464', 'display_name': 'Saiseikai Utsunomiya hospital', 'ror': 'https://ror.org/03a2szg51', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210123464']}, {'id': 'https://openalex.org/I4210137409', 'display_name': 'National Hospital Organization', 'ror': 'https://ror.org/03ntccx93', 'country_code': 'JP', 'type': 'government', 'lineage': ['https://openalex.org/I4210137409']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Otohiro Katsube', 'raw_affiliation_strings': ['Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan', 'institution_ids': ['https://openalex.org/I4210123464', 'https://openalex.org/I4210137409']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5011349035', 'display_name': 'Koichi Hagiwara', 'orcid': 'https://orcid.org/0000-0001-8079-7811'}, 'institutions': [{'id': 'https://openalex.org/I146500386', 'display_name': 'Jichi Medical University', 'ror': 'https://ror.org/010hz0g26', 'country_code': 'JP', 'type': 'education', 'lineage': ['https://openalex.org/I146500386']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Koichi Hagiwara', 'raw_affiliation_strings': ['Department of Medicine, Division of Pulmonary Medicine, Jichi Medical University, Shimotsuke 329-0498, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Medicine, Division of Pulmonary Medicine, Jichi Medical University, Shimotsuke 329-0498, Japan', 'institution_ids': ['https://openalex.org/I146500386']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5043607755', 'display_name': 'Seiji Niho', 'orcid': 'https://orcid.org/0000-0001-9480-5923'}, 'institutions': [{'id': 'https://openalex.org/I78274823', 'display_name': 'Dokkyo Medical University', 'ror': 'https://ror.org/05k27ay38', 'country_code': 'JP', 'type': 'education', 'lineage': ['https://openalex.org/I78274823']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Seiji Niho', 'raw_affiliation_strings': ['Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University, Shimotsuga 321-0293, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University, Shimotsuga 321-0293, Japan', 'institution_ids': ['https://openalex.org/I78274823']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5110043181', 'display_name': 'Norihiro Masuda', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210123464', 'display_name': 'Saiseikai Utsunomiya hospital', 'ror': 'https://ror.org/03a2szg51', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210123464']}, {'id': 'https://openalex.org/I4210137409', 'display_name': 'National Hospital Organization', 'ror': 'https://ror.org/03ntccx93', 'country_code': 'JP', 'type': 'government', 'lineage': ['https://openalex.org/I4210137409']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Norihiro Masuda', 'raw_affiliation_strings': ['Department of Surgery, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Surgery, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan', 'institution_ids': ['https://openalex.org/I4210123464', 'https://openalex.org/I4210137409']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5024331596', 'display_name': 'Takaaki Tanaka', 'orcid': 'https://orcid.org/0000-0003-0136-1708'}, 'institutions': [{'id': 'https://openalex.org/I4210123464', 'display_name': 'Saiseikai Utsunomiya hospital', 'ror': 'https://ror.org/03a2szg51', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210123464']}, {'id': 'https://openalex.org/I4210137409', 'display_name': 'National Hospital Organization', 'ror': 'https://ror.org/03ntccx93', 'country_code': 'JP', 'type': 'government', 'lineage': ['https://openalex.org/I4210137409']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Takaaki Tanaka', 'raw_affiliation_strings': ['Department of Orthopaedic Surgery, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Orthopaedic Surgery, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan', 'institution_ids': ['https://openalex.org/I4210123464', 'https://openalex.org/I4210137409']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5051809902', 'display_name': 'Kumiya Sugiyama', 'orcid': 'https://orcid.org/0000-0002-0624-946X'}, 'institutions': [{'id': 'https://openalex.org/I4210123464', 'display_name': 'Saiseikai Utsunomiya hospital', 'ror': 'https://ror.org/03a2szg51', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210123464']}, {'id': 'https://openalex.org/I4210137409', 'display_name': 'National Hospital Organization', 'ror': 'https://ror.org/03ntccx93', 'country_code': 'JP', 'type': 'government', 'lineage': ['https://openalex.org/I4210137409']}, {'id': 'https://openalex.org/I78274823', 'display_name': 'Dokkyo Medical University', 'ror': 'https://ror.org/05k27ay38', 'country_code': 'JP', 'type': 'education', 'lineage': ['https://openalex.org/I78274823']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Kumiya Sugiyama', 'raw_affiliation_strings': ['Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan', 'Saitama Medical Center, Department of Respiratory Medicine and Clinical Immunology, Dokkyo Medical University, Shimotsuga 321-0293, Japan'], 'affiliations': [{'raw_affiliation_string': 'Department of Respiratory Medicine and Clinical Immunology, National Hospital Organization Utsunomiya National Hospital, Utsunomiya 329-1193, Japan', 'institution_ids': ['https://openalex.org/I4210123464', 'https://openalex.org/I4210137409']}, {'raw_affiliation_string': 'Saitama Medical Center, Department of Respiratory Medicine and Clinical Immunology, Dokkyo Medical University, Shimotsuga 321-0293, Japan', 'institution_ids': ['https://openalex.org/I78274823']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 4, 'corresponding_author_ids': ['https://openalex.org/A5000622170'], 'corresponding_institution_ids': ['https://openalex.org/I4210123464', 'https://openalex.org/I4210137409', 'https://openalex.org/I146500386'], 'apc_list': {'value': 2200, 'currency': 'CHF', 'value_usd': 2382, 'provenance': 'doaj'}, 'apc_paid': {'value': 2200, 'currency': 'CHF', 'value_usd': 2382, 'provenance': 'doaj'}, 'fwci': 1.867, 'has_fulltext': True, 'fulltext_origin': 'pdf', 'cited_by_count': 29, 'citation_normalized_percentile': {'value': 0.749287, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 95, 'max': 96}, 'biblio': {'volume': '9', 'issue': '12', 'first_page': '1500', 'last_page': '1500'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10118', 'display_name': 'SARS-CoV-2 and COVID-19 Research', 'score': 0.9999, 'subfield': {'id': 'https://openalex.org/subfields/2725', 'display_name': 'Infectious Diseases'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10118', 'display_name': 'SARS-CoV-2 and COVID-19 Research', 'score': 0.9999, 'subfield': {'id': 'https://openalex.org/subfields/2725', 'display_name': 'Infectious Diseases'}, '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/T11754', 'display_name': 'SARS-CoV-2 detection and testing', 'score': 0.9965, 'subfield': {'id': 'https://openalex.org/subfields/2725', 'display_name': 'Infectious Diseases'}, '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/T10041', 'display_name': 'COVID-19 Clinical Research Studies', 'score': 0.9804, 'subfield': {'id': 'https://openalex.org/subfields/2725', 'display_name': 'Infectious Diseases'}, '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/antibody-titer', 'display_name': 'Antibody titer', 'score': 0.7954164}], 'concepts': [{'id': 'https://openalex.org/C32611913', 'wikidata': 'https://www.wikidata.org/wiki/Q2166189', 'display_name': 'Titer', 'level': 3, 'score': 0.82018554}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.8164004}, {'id': 'https://openalex.org/C22889606', 'wikidata': 'https://www.wikidata.org/wiki/Q2166189', 'display_name': 'Antibody titer', 'level': 4, 'score': 0.7954164}, {'id': 'https://openalex.org/C159654299', 'wikidata': 'https://www.wikidata.org/wiki/Q79460', 'display_name': 'Antibody', 'level': 2, 'score': 0.63292074}, {'id': 'https://openalex.org/C126322002', 'wikidata': 'https://www.wikidata.org/wiki/Q11180', 'display_name': 'Internal medicine', 'level': 1, 'score': 0.44540232}, {'id': 'https://openalex.org/C203014093', 'wikidata': 'https://www.wikidata.org/wiki/Q101929', 'display_name': 'Immunology', 'level': 1, 'score': 0.3887148}], 'mesh': [], 'locations_count': 4, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.3390/vaccines9121500', 'pdf_url': 'https://www.mdpi.com/2076-393X/9/12/1500/pdf?version=1639821475', 'source': {'id': 'https://openalex.org/S4210226234', 'display_name': 'Vaccines', 'issn_l': '2076-393X', 'issn': ['2076-393X'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310310987', 'host_organization_name': 'Multidisciplinary Digital Publishing Institute', 'host_organization_lineage': ['https://openalex.org/P4310310987'], 'host_organization_lineage_names': ['Multidisciplinary Digital Publishing Institute'], 'type': 'journal'}, 'license': 'cc-by', 'license_id': 'https://openalex.org/licenses/cc-by', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': False, 'landing_page_url': 'https://doaj.org/article/ca86d4b0715f426bb74c3f4b8a740aec', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306401280', 'display_name': 'DOAJ (DOAJ: Directory of Open Access Journals)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': None, 'host_organization_name': None, 'host_organization_lineage': [], 'host_organization_lineage_names': [], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8708461', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S2764455111', 'display_name': 'PubMed Central', 'issn_l': None, 'issn': None, 'is_oa': True, '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': 'publishedVersion', 'is_accepted': True, 'is_published': True}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/34960246', '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': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.3390/vaccines9121500', 'pdf_url': 'https://www.mdpi.com/2076-393X/9/12/1500/pdf?version=1639821475', 'source': {'id': 'https://openalex.org/S4210226234', 'display_name': 'Vaccines', 'issn_l': '2076-393X', 'issn': ['2076-393X'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310310987', 'host_organization_name': 'Multidisciplinary Digital Publishing Institute', 'host_organization_lineage': ['https://openalex.org/P4310310987'], 'host_organization_lineage_names': ['Multidisciplinary Digital Publishing Institute'], 'type': 'journal'}, 'license': 'cc-by', 'license_id': 'https://openalex.org/licenses/cc-by', 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [{'score': 0.89, 'display_name': 'Good health and well-being', 'id': 'https://metadata.un.org/sdg/3'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 20, 'referenced_works': ['https://openalex.org/W2168818510', 'https://openalex.org/W2921553057', 'https://openalex.org/W3047764989', 'https://openalex.org/W3094300510', 'https://openalex.org/W3122043911', 'https://openalex.org/W3135768856', 'https://openalex.org/W3135966613', 'https://openalex.org/W3144728481', 'https://openalex.org/W3146538993', 'https://openalex.org/W3152772187', 'https://openalex.org/W3158247426', 'https://openalex.org/W3158750369', 'https://openalex.org/W3159628425', 'https://openalex.org/W3176552995', 'https://openalex.org/W3179750870', 'https://openalex.org/W3184172540', 'https://openalex.org/W3189612030', 'https://openalex.org/W3192275216', 'https://openalex.org/W3198831432', 'https://openalex.org/W3201291357'], 'related_works': ['https://openalex.org/W4394857639', 'https://openalex.org/W4366772733', 'https://openalex.org/W4323538740', 'https://openalex.org/W4313375248', 'https://openalex.org/W2411416451', 'https://openalex.org/W2384171498', 'https://openalex.org/W2381991529', 'https://openalex.org/W2118520178', 'https://openalex.org/W2052465442', 'https://openalex.org/W2038865602'], 'abstract_inverted_index': {'We': [0], 'aimed': [1], 'to': [2, 15, 33, 99, 151, 220], 'determine': [3], 'antibody': [4, 52, 86, 95, 109, 122, 141, 147, 185, 204], 'titers': [5, 39, 53, 87, 96, 123, 148, 167, 186, 217, 237], 'at': [6, 88, 111, 187, 195, 244], 'six': [7, 16, 89, 100, 112, 152, 188, 221], 'months': [8, 17, 90, 101, 113, 153, 189, 222], 'and': [9, 32, 60, 91, 192], 'their': [10, 200], 'percentage': [11, 92, 144, 163], 'change': [12, 145, 164], 'from': [13, 97, 149, 218], 'three': [14, 98, 150, 196, 219, 234], 'after': [18, 70], 'the': [19, 23, 71, 135, 162, 207, 213, 227, 232], 'second': [20, 72], 'dose': [21], 'of': [22, 82], 'BNT162b2': [24], 'coronavirus': [25], 'disease': [26], '2019': [27], '(COVID-19)': [28], 'mRNA': [29], 'vaccine': [30], '(Pfizer/BioNTech)': [31], 'explore': [34], 'clinical': [35], 'variables': [36], 'associated': [37, 138, 160, 182, 211], 'with': [38, 85, 139, 161, 183, 212], 'in': [40, 56, 94, 146, 165, 215], 'Japan.We': [41], 'enrolled': [42], '365': [43, 128], 'healthcare': [44], 'workers': [45], '(250': [46], 'women,': [47], '115': [48], 'men)': [49], 'whose': [50, 61], 'three-month': [51], 'were': [54, 64, 78, 102, 190], 'analyzed': [55], 'our': [57], 'previous': [58], 'study': [59], 'blood': [62], 'samples': [63], 'collected': [65, 76], '183': [66], '±': [67], '15': [68], 'days': [69], 'dose.': [73], 'Participant': [74], 'characteristics,': [75], 'previously,': [77], 'used.': [79], 'The': [80, 156], 'relationships': [81], 'these': [83], 'factors': [84, 181, 243], 'changes': [93], 'analyzed.Median': [103], 'age': [104, 170, 191], 'was': [105, 114, 134, 154, 168, 223], '44': [106], 'years.': [107], 'Median': [108, 143], 'titer': [110], '539': [115], 'U/mL.': [116], 'Older': [117], 'participants': [118], 'had': [119], 'significantly': [120, 159, 210], 'lower': [121, 140, 184], '(20s,': [124], '752': [125], 'U/mL;': [126], '60s-70s,': [127], 'U/mL).': [129], 'In': [130], 'age-adjusted': [131], 'analysis,': [132], 'smoking': [133], 'only': [136, 157, 208], 'factor': [137, 158, 209], 'titers.': [142, 205], '-29.4%.': [155], 'Ab': [166, 216], 'not': [169], 'or': [171], 'smoking,': [172, 193], 'but': [173], 'sex': [174, 228], '(women,': [175], '-31.6%;': [176], 'men,': [177], '-25.1%).The': [178], 'most': [179], 'important': [180], 'as': [194], 'months,': [197], 'probably': [198], 'reflecting': [199], 'effect': [201], 'on': [202], 'peak': [203], 'However,': [206], 'attenuation': [214], 'sex,': [224], 'which': [225], 'reduced': [226], 'difference': [229], 'seen': [230], 'during': [231], 'first': [233], 'months.': [235], 'Antibody': [236], 'may': [238], 'be': [239], 'affected': [240], 'by': [241], 'different': [242, 245], 'time': [246], 'points.': [247]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W4200167841', 'counts_by_year': [{'year': 2024, 'cited_by_count': 3}, {'year': 2023, 'cited_by_count': 8}, {'year': 2022, 'cited_by_count': 16}], 'updated_date': '2024-12-20T09:07:45.358894', 'created_date': '2021-12-31'}