{"id":"https://openalex.org/W7224127332","doi":"https://doi.org/10.20935/acadphealth8610","title":"Temperature, fine particulate matter, and influenza: a time-stratified case-crossover study","display_name":"Temperature, fine particulate matter, and influenza: a time-stratified case-crossover study","publication_year":2026,"publication_date":"2026-10-28","ids":{"openalex":"https://openalex.org/W7224127332","doi":"https://doi.org/10.20935/acadphealth8610"},"language":"en","primary_location":{"id":"doi:10.20935/acadphealth8610","doi":"https://doi.org/10.20935/acadphealth8610","is_oa":true,"landing_page_url":"https://doi.org/10.20935/acadphealth8610","pdf_url":null,"source":{"id":"https://openalex.org/S7407056634","display_name":"Academia Global and Public Health","issn_l":"3071-0324","issn":["3071-0324"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Academia Global and Public Health","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://doi.org/10.20935/acadphealth8610","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5031832225","display_name":"Keita Wagatsuma","orcid":"https://orcid.org/0000-0002-9745-2294","observed_orcids":["https://orcid.org/0000-0002-9745-2294"]},"institutions":[{"id":"https://openalex.org/I71395657","display_name":"Niigata University","ror":"https://ror.org/04ww21r56","country_code":"JP","type":"education","lineage":["https://openalex.org/I71395657"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Keita Wagatsuma","raw_affiliation_strings":["Division of International Health (Public Health), Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan","Institute for Research Administration, Niigata University, Niigata, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Division of International Health (Public Health), Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan","institution_ids":["https://openalex.org/I71395657"]},{"raw_affiliation_string":"Institute for Research Administration, Niigata University, Niigata, Japan","institution_ids":["https://openalex.org/I71395657"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5031832225"],"corresponding_institution_ids":["https://openalex.org/I71395657"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.78028703,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"2","issue":"4","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10190","display_name":"Air Quality and Health Impacts","score":0.9276999831199646,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10190","display_name":"Air Quality and Health Impacts","score":0.9276999831199646,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11244","display_name":"Climate Change and Health Impacts","score":0.05990000069141388,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10167","display_name":"Influenza Virus Research Studies","score":0.001500000013038516,"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/influenza","display_name":"influenza","score":0.8339999914169312},{"id":"https://openalex.org/keywords/pm2-5","display_name":"PM2.5","score":0.968999981880188},{"id":"https://openalex.org/keywords/ambient-temperature","display_name":"ambient temperature","score":0.9750000238418579},{"id":"https://openalex.org/keywords/air-pollution","display_name":"air pollution","score":0.6290000081062317},{"id":"https://openalex.org/keywords/cold-exposure","display_name":"cold exposure","score":0.546999990940094},{"id":"https://openalex.org/keywords/influenza-surveillance","display_name":"influenza surveillance","score":0.4580000042915344},{"id":"https://openalex.org/keywords/temporal-heterogeneity","display_name":"temporal heterogeneity","score":0.6980000138282776},{"id":"https://openalex.org/keywords/kawasaki-city","display_name":"Kawasaki City","score":0.7049999833106995}],"concepts":[{"id":"https://openalex.org/C24245907","wikidata":"https://www.wikidata.org/wiki/Q498957","display_name":"Particulates","level":2,"score":0.7804999947547913},{"id":"https://openalex.org/C75778745","wikidata":"https://www.wikidata.org/wiki/Q342626","display_name":"Lag","level":2,"score":0.5896000266075134},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.4975999891757965},{"id":"https://openalex.org/C159009313","wikidata":"https://www.wikidata.org/wiki/Q5283159","display_name":"Distributed lag","level":2,"score":0.4375},{"id":"https://openalex.org/C48921125","wikidata":"https://www.wikidata.org/wiki/Q10861030","display_name":"Linear regression","level":2,"score":0.38940000534057617},{"id":"https://openalex.org/C91586092","wikidata":"https://www.wikidata.org/wiki/Q757520","display_name":"Atmospheric sciences","level":1,"score":0.3587999939918518},{"id":"https://openalex.org/C2985831756","wikidata":"https://www.wikidata.org/wiki/Q107291880","display_name":"Maximum temperature","level":2,"score":0.3068999946117401},{"id":"https://openalex.org/C2987767877","wikidata":"https://www.wikidata.org/wiki/Q352862","display_name":"Time lag","level":3,"score":0.3034000098705292},{"id":"https://openalex.org/C2993377847","wikidata":"https://www.wikidata.org/wiki/Q1771903","display_name":"Lag time","level":2,"score":0.287200003862381},{"id":"https://openalex.org/C82789193","wikidata":"https://www.wikidata.org/wiki/Q2142611","display_name":"Relative risk","level":3,"score":0.26669999957084656},{"id":"https://openalex.org/C3019152653","wikidata":"https://www.wikidata.org/wiki/Q186290","display_name":"Linear relationship","level":2,"score":0.26440000534057617},{"id":"https://openalex.org/C3018751465","wikidata":"https://www.wikidata.org/wiki/Q4120645","display_name":"Seasonal influenza","level":5,"score":0.2556999921798706}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.20935/acadphealth8610","doi":"https://doi.org/10.20935/acadphealth8610","is_oa":true,"landing_page_url":"https://doi.org/10.20935/acadphealth8610","pdf_url":null,"source":{"id":"https://openalex.org/S7407056634","display_name":"Academia Global and Public Health","issn_l":"3071-0324","issn":["3071-0324"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Academia Global and Public Health","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.20935/acadphealth8610","doi":"https://doi.org/10.20935/acadphealth8610","is_oa":true,"landing_page_url":"https://doi.org/10.20935/acadphealth8610","pdf_url":null,"source":{"id":"https://openalex.org/S7407056634","display_name":"Academia Global and Public Health","issn_l":"3071-0324","issn":["3071-0324"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Academia Global and Public Health","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.9763000011444092,"id":"https://metadata.un.org/sdg/3"}],"study_designs":[{"display_name":"Observational Study","id":"https://openalex.org/study-designs/observational-study"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W1535938379","https://openalex.org/W2006203329","https://openalex.org/W2115112857","https://openalex.org/W2531505586","https://openalex.org/W2775569101","https://openalex.org/W3010940342","https://openalex.org/W4293217024","https://openalex.org/W4386424696","https://openalex.org/W4389564276","https://openalex.org/W4389571388","https://openalex.org/W4392019245","https://openalex.org/W4392626610","https://openalex.org/W4396637486","https://openalex.org/W4402858539","https://openalex.org/W4403262406","https://openalex.org/W4403739485","https://openalex.org/W4412069637","https://openalex.org/W4412688268","https://openalex.org/W4413113150","https://openalex.org/W4415584486"],"related_works":["https://openalex.org/W4403262406","https://openalex.org/W2531505586","https://openalex.org/W7203748193","https://openalex.org/W7130560822","https://openalex.org/W6958173368","https://openalex.org/W4412688268","https://openalex.org/W4409377041","https://openalex.org/W1992725395","https://openalex.org/W3161828182","https://openalex.org/W4214695173"],"abstract_inverted_index":{"Introduction:":[0],"Evidence":[1,215],"that":[2],"fine":[3],"particulate":[4],"matter":[5],"(PM":[6],"2.5":[7,38,63,99,145,175,182,224],")":[8],"modifies":[9],"the":[10,33,60,103,136,158,194,197,204,209,219,228,249],"short-term":[11],"association":[12,35,221],"between":[13],"ambient":[14],"temperature":[15,142,160],"and":[16,44,48,82,111,116,121,176,230,245],"daily":[17],"influenza":[18,47,131],"cases":[19],"remains":[20],"limited,":[21],"particularly":[22,233],"in":[23,39,94,208,227],"lower-pollution":[24],"settings":[25],"such":[26],"as":[27],"Japan.":[28,42],"We":[29,72],"assessed":[30],"modification":[31,217],"of":[32,187,218,248],"temperature\u2013influenza":[34,220],"by":[36,102,222],"PM":[37,62,98,144,174,181,223],"Kawasaki":[40],"City,":[41],"Materials":[43],"methods:":[45],"The":[46,88,125,140,184,237],"meteorological":[49],"source":[50,126],"covered":[51,65],"4079":[52],"calendar":[53],"days":[54,67,93],"(1":[55],"March":[56,70],"2014\u201330":[57],"April":[58],"2025);":[59],"date-aligned":[61],"dataset":[64],"4049":[66],"through":[68],"31":[69],"2025.":[71],"used":[73],"a":[74,83],"time-stratified":[75],"case-crossover":[76],"design":[77],"with":[78],"conditional":[79],"quasi-Poisson":[80],"regression":[81],"distributed":[84],"lag":[85,107],"nonlinear":[86],"model.":[87],"principal":[89],"model":[90],"retained":[91],"4028":[92],"931":[95],"year\u2013month\u2013day-of-week":[96],"strata.":[97],"was":[100,147,190,200,207,225],"represented":[101],"8-day":[104],"mean":[105],"over":[106],"0\u20137;":[108],"its":[109],"low":[110,173,235],"high":[112,180],"levels":[113],"were":[114,167],"7.41":[115],"17.13":[117],"\u00b5g/m":[118],"3":[119],"(10th":[120],"90th":[122],"percentiles).":[123],"Results:":[124],"surveillance":[127],"series":[128],"recorded":[129],"309,759":[130],"cases;":[132],"309,256":[133],"occurred":[134],"during":[135],"4049-day":[137],"merged":[138],"period.":[139],"overall":[141],"\u00d7":[143],"interaction":[146],"statistically":[148],"significant":[149],"(":[150],"p":[151],"<":[152],"0.001).":[153],"At":[154],"4.6":[155],"\u00b0C":[156],"versus":[157],"median":[159],"(17.3":[161],"\u00b0C),":[162],"cumulative":[163],"relative":[164],"risks":[165],"(RRs)":[166],"20.72":[168],"(95%":[169],"CI:":[170],"16.26\u201326.42)":[171],"at":[172,179,234],"56.36":[177],"(44.87\u201370.80)":[178],".":[183],"corresponding":[185],"ratio":[186],"RRs":[188],"(RRR)":[189],"2.72":[191],"(2.01\u20133.69).":[192],"In":[193],"pre-pandemic":[195,231],"analysis,":[196],"cold":[198],"RRR":[199],"2.66":[201],"(1.78\u20133.96),":[202],"whereas":[203],"post-pandemic":[205,239],"estimate":[206,240],"opposite":[210],"direction":[211],"(0.20":[212],"[0.05\u20130.79]).":[213],"Conclusions:":[214],"for":[216],"observed":[226],"full-period":[229],"analyses,":[232],"temperatures.":[236],"opposite-direction":[238],"indicates":[241],"substantial":[242],"temporal":[243],"heterogeneity":[244],"limits":[246],"interpretation":[247],"pooled":[250],"result.":[251]},"counts_by_year":[],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2026-10-29T00:00:00"}
