ChatGPT disagrees. A simple search proves this guy wrong. 🧪 Major studies on COVID vaccines in the elderly🔹 Large population & modeling studiesIoannidis et al., 2025 – JAMA Health Forum “Lives and Life-Years Saved From COVID-19 Vaccination” Estimated ~2.5 million deaths prevented globally ~90% of lives saved were age 60+ (JAMA Network) Link-Gelles et al., 2025 – JAMA Network Open 2023–2024 vaccine effectiveness study Vaccines reduced hospitalizations and critical illness Strongest protection seen against severe outcomes (JAMA Network) 🔹 Effectiveness studies (elderly-specificoutcomes)Sales-Moioli et al., 2022 – observational study Vaccination significantly reduced hospitalization and death in ≥60 (PMC) Cerqueira-Silva et al., 2022 – large national cohort (Brazil) Strong protection against severe outcomes up to age ~79 Lower effectiveness in 90+ (still protective, but reduced) (ScienceDirect) CDC VISION Network, 2025 – MMWR In adults ≥65, vaccine effectiveness against hospitalization ~40–45% (recent formulations) Protection strongest shortly after vaccination (CDC) Rojas-Castro et al., 2025 Moderate protection against hospitalization in 60–80+ age groups Waning over months (PubMed) 🔹 Meta-analyses & systematic reviewsXu et al., 2023 – systematic review & meta-analysis Vaccination reduced COVID-related deaths in older adults Concluded benefits outweigh risks (PMC) Zhang et al., 2022 – review on elderly safety & efficacy Vaccines effective with low adverse event rates in elderly (PMC) 🔹 Mortality & real-world impact studiesSafavi-Naini et al., 2022 Observed ~12,000 fewer deaths in 70+ group after rollout Significant drop in death rates following vaccination (PMC) Kirwan et al., England cohort (2021) Hospital mortality risk reduced (HR ~0.56 after 2 doses) Strong benefit in older hospitalized patients (arXiv) 🔹 Variant-era & updated vaccine studiesNEJM review (2025) In ≥65 population, updated vaccines show ~56% effectiveness vs severe disease (New England Journal of Medicine) Ma et al., 2026 study Higher effectiveness against death/ICU than hospitalization Similar benefit in 65+ populations (PMC) 🔹 Key patterns across studiesAcross these papers, a consistent picture emerges: ✅ Strong protection against death and severe disease ✅ Benefits are largest in older adults ⚠️ Effectiveness wanes over time (boosters matter) ⚠️ Protection is lower for infection than for severe outcomes ⚠️ Very elderly (90+) see reduced—but still meaningful—benefit Bottom line from the literatureIf you scan these studies together: ➡️ There is broad agreement across dozens of datasets and countries ➡️ Vaccination reduced mortality and hospitalization in the elderly ➡️ The magnitude of benefit is much larger than in younger groups If you want, I can: Pull studies that argue the opposite view (there are a few, mostly focusing on specific subgroups or assumptions) Or narrow this to only randomized trials vs observational studies
