PMID- 34406896 OWN - NLM STAT- MEDLINE DCOM- 20220418 LR - 20220418 IS - 2164-554X (Electronic) IS - 2164-5515 (Print) IS - 2164-5515 (Linking) VI - 18 IP - 1 DP - 2022 Dec 31 TI - Improved post-marketing safety surveillance of quadrivalent inactivated influenza vaccine in Mexico using a computerized, SMS-based follow-up system. PG - 1935170 LID - 10.1080/21645515.2021.1935170 [doi] LID - 1935170 AB - Quadrivalent influenza vaccines (QIVs) are designed to prevent influenza disease caused by two influenza A viruses (H1N1 and H3N2) and both influenza B lineages. Risk-monitoring of QIVs to identify adverse events (AEs) is necessary as influenza vaccines are reformulated each year. We developed a new active surveillance system (Sistema de Control de Vacunacion; SICOVA) to improve pharmacovigilance in Mexico. Participants (N = 2013) aged 0 - 96 years from nine sites across three influenza seasons (n = 1166 in 2015 - 2016; n = 633 in 2016 - 2017; and n = 214 in 2017 - 2018) agreed to receive text messages 1, 7, 28, and 42 days post-vaccination to know if they had experienced any AEs. The study was completed electronically by 1763 (87.6%) participants; manual follow-up was conducted for 250 participants whose reporting was incomplete. The overall AE rate was 9.09%. At least one AE was reported by 183 participants, of whom 131 (71.58%) did not require a medical visit and 52 (28.42%) needed medical attention, with none requiring hospitalization. Most AEs requiring medical attention occurred in children aged 0 - 5 years (n = 22, 42.31%) and adults aged 31 - 35 years (n = 5, 9.62%). These results are consistent with the established safety profile of Fluzone(R) Quadrivalent, and show that SICOVA can facilitate surveillance and increase AE reporting in Mexico. FAU - Betancourt-Cravioto, Miguel AU - Betancourt-Cravioto M AD - Sociedad Mexicana de Salud Publica, CDMX, Mexico. FAU - Cervantes-Powell, Patricia AU - Cervantes-Powell P AUID- ORCID: 0000-0001-9173-9000 AD - Medical Department, Sanofi Pasteur, CDMX, Mexico. FAU - Tapia-Conyer, Roberto AU - Tapia-Conyer R AD - Family Medicine, School of Medicine. National Autonomous University of Mexico, Mexico City, Mexico. FAU - Ledlie, Shaleesa AU - Ledlie S AD - Epidemiology and Benefit-Risk Department, Sanofi Pasteur, Toronto, Ontario, Canada. FAU - Gandhi-Banga, Sonja AU - Gandhi-Banga S AD - Epidemiology and Benefit-Risk Department, Sanofi Pasteur, Toronto, Ontario, Canada. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210818 PL - United States TA - Hum Vaccin Immunother JT - Human vaccines & immunotherapeutics JID - 101572652 RN - 0 (Influenza Vaccines) RN - 0 (Vaccines, Combined) RN - 0 (Vaccines, Inactivated) SB - IM MH - Adult MH - Child MH - Follow-Up Studies MH - Humans MH - *Influenza A Virus, H1N1 Subtype MH - Influenza A Virus, H3N2 Subtype MH - *Influenza Vaccines/adverse effects MH - *Influenza, Human/prevention & control MH - Marketing MH - Mexico/epidemiology MH - Vaccines, Combined MH - Vaccines, Inactivated/adverse effects PMC - PMC8920169 OTO - NOTNLM OT - Influenza vaccines OT - adverse events OT - immunization OT - pharmacovigilance OT - post-marketing safety surveillance OT - risk management plan OT - safety OT - seasonal influenza OT - vaccination EDAT- 2021/08/19 06:00 MHDA- 2022/04/19 06:00 PMCR- 2021/08/18 CRDT- 2021/08/18 17:16 PHST- 2021/08/19 06:00 [pubmed] PHST- 2022/04/19 06:00 [medline] PHST- 2021/08/18 17:16 [entrez] PHST- 2021/08/18 00:00 [pmc-release] AID - 1935170 [pii] AID - 10.1080/21645515.2021.1935170 [doi] PST - ppublish SO - Hum Vaccin Immunother. 2022 Dec 31;18(1):1935170. doi: 10.1080/21645515.2021.1935170. Epub 2021 Aug 18.