{"id":"qivc","safety":{"commonSideEffects":[{"rate":"10–30%","effect":"Injection site pain or erythema"},{"rate":"5–15%","effect":"Myalgia"},{"rate":"5–10%","effect":"Headache"},{"rate":"5–10%","effect":"Fatigue"},{"rate":"<5%","effect":"Low-grade fever"}]},"_chembl":null,"_dailymed":null,"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"QIVc contains inactivated (killed) influenza virus particles representing two influenza A subtypes (H1N1 and H3N2) and two influenza B lineages. The vaccine is administered intramuscularly and triggers both humoral and cellular immune responses, generating antibodies and T-cell immunity against the included viral strains to provide protection against seasonal influenza infection.","oneSentence":"QIVc is a quadrivalent inactivated influenza vaccine that stimulates immune responses against four strains of influenza virus.","_ai_confidence":"medium"},"_scrapedAt":"2026-03-28T00:52:11.330Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Seasonal influenza prevention in adults and children"}]},"trialDetails":[{"nctId":"NCT03932682","phase":"PHASE3","title":"Efficacy Study With QIVc in Pediatric Subjects","status":"COMPLETED","sponsor":"Seqirus","startDate":"2019-05-13","conditions":"Influenza, Human","enrollment":5723},{"nctId":"NCT03438487","phase":"","title":"Flucelvax (TIVc or QIVc) Pregnancy Registry","status":"COMPLETED","sponsor":"Seqirus","startDate":"2017-09-01","conditions":"Influenza, Human, Pregnancy, Birth Defect","enrollment":692},{"nctId":"NCT04074928","phase":"PHASE3","title":"Safety and Immunogenicity Study of QIVc in Healthy Pediatric Subjects","status":"COMPLETED","sponsor":"Seqirus","startDate":"2019-09-06","conditions":"Influenza, Human, Virus Diseases","enrollment":2414},{"nctId":"NCT03165617","phase":"PHASE3","title":"Clinical Study to Evaluate the Efficacy, Safety and Immunogenicity of QIVc in Subjects ≥2 to <18 Years of Age","status":"COMPLETED","sponsor":"Seqirus","startDate":"2017-05-25","conditions":"Influenza, Human","enrollment":4514},{"nctId":"NCT01992094","phase":"PHASE3","title":"Safety and Immunogenicity of Three Influenza Vaccines Adults Ages 18 and Older","status":"COMPLETED","sponsor":"Novartis Vaccines","startDate":"2013-11","conditions":"Influenza","enrollment":2680},{"nctId":"NCT01992107","phase":"PHASE3","title":"Safety and Immunogenicity of Three Influenza Vaccines in Children Aged 4 Years Old to Less Than 18 Years Old","status":"COMPLETED","sponsor":"Novartis Vaccines","startDate":"2013-11","conditions":"Influenza","enrollment":2333}],"_emaApprovals":[],"_faersSignals":[],"_approvalHistory":[],"publicationCount":36,"rwe":[],"genericFilers":[],"relatedDrugs":[],"labelChanges":[],"biosimilarFilings":[],"pricing":[],"formularyStatus":[],"manufacturing":[],"companionDiagnostics":[],"competitors":[],"timeline":[],"patents":[],"ownershipHistory":[],"trials":[],"biosimilars":[],"latestUpdates":[],"references":[],"tags":[],"ecosystem":[],"genericManufacturerList":[],"offLabel":[],"developmentCodes":[],"aliases":["Flucelvax Quadrivalent"],"phase":"phase_3","status":"active","brandName":"QIVc","genericName":"QIVc","companyName":"Seqirus","companyId":"seqirus","modality":"Biologic","firstApprovalDate":"","aiSummary":"QIVc is a quadrivalent inactivated influenza vaccine that stimulates immune responses against four strains of influenza virus. Used for Seasonal influenza prevention in adults and children.","enrichmentLevel":3,"visitCount":0,"trialStats":{"total":3,"withResults":3},"verificationStatus":"verified","dataCompleteness":{"mechanism":true,"indications":true,"safety":true,"trials":true,"score":4}}