# COVID Vaccine Linked to New Side Effect, Especially in Older Adults

> **Newsylist Open Intelligence Dossier** · First detected: 2026-06-24 21:37 UTC · Category: Health · Sources: 6 · Current Velocity: 3.67

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Yahoo Finance Singapore | New Study Suggests Shingles Vaccination May Be Associated with Reduced Dementia Risk in Older Adults | 2026-06-25 10:42 | [Source Link](https://news.google.com/rss/articles/CBMikgFBVV95cUxQcm90T21mWnhBMGwyTlJLTnJYYjRyS0dKUEd1Wk1uV09nZUNNMVE2bGo4bFk1MkJ0VGUxTVVQa1VNVFh5c2dKMWd3SWtfMjNBUGp3MjM0RTlwa2ZDWi12SlppWklYcFgzSTVpLUNpRjRBeUphekMxMGYzQjY1dms5c3NzeHRBblZmd1N1V3NqQndhQQ?oc=5) |
| Healio | Coadministration of COVID-19, influenza vaccines may lower MACE risk in older adults | 2026-06-23 01:30 | [Source Link](https://news.google.com/rss/articles/CBMiygFBVV95cUxPV05FOFBCX3gxRGRYWjhoWi1sR2JMUy0tWUhpR0lZRHFxLVFjMEZNUk84OWpwQVczRGJmdE1xV1FqclVtOHlUek5ZS1BQLUpiamRNaHZJSHlINUFCbUE0NlBvdEJldkxWR0w3Rms4QUN4OWtkTUxDbkJRMFJoVmVVZVNGRXBWR0NENVRibzVrMnZlMzUwWkFmbHRnZG5PeHQ5SUdwS2VnOTlhWTk0MGJhZmxoZnhielpTNEEwS25MTm9RTzM1dTdLblh3?oc=5) |
| Military.com | Veterans’ Risk of Heart Attack, Stroke Fell by Up to 38% With COVID Vaccine | 2026-06-23 01:30 | [Source Link](https://news.google.com/rss/articles/CBMimAFBVV95cUxOT2JOYmVra2xRVkl1VVBISXE5OHg3MFRYRmVrV3pGZURWS0QyMk5LRG5zVS03b0ZHMXR6N1ptRFpXNjVIOHhyZGJYVTBQSTRGSGcwSGRhaENwaVVpQWhqc1RidkhTMlVSUVhmNXU2ODhMeHY2VGRHZU5MUDlLLXF2LVhtUllDTVZpRHg0OEpjZEhWajI3NjVGbA?oc=5) |
| The Hill | COVID-19 vaccine linked with lower risk of heart attack, stroke: Study | 2026-06-23 01:30 | [Source Link](https://news.google.com/rss/articles/CBMikAFBVV95cUxOVXhQT080REV3T3YtNEhiZzY1Z1EtUTBXQm9LOTRqTjV6VG5VNTl6Y3EyYkhubU1vVTZ6VVFnM2pKSGljLXE0UmVsckNUc1g2djFnd244ekstbzYxV3JqYkFWZUMxRmswa3pOVHJ6R2xlUFZ4U1dla3pOTU9TSVA0ODhfRkxXUEozVFNjOGwyNEbSAZYBQVVfeXFMT0NWRGliYnd0eTN3WElHMnM3SUJWQkxQMEVoX3Z2ell0bHNDQmpxdElJWHdtU0tVeXYwc2s5UkRyeGpOQ3V4d1dqSDZuSExNYXFPdFlvZ1FiZDFtVmlDNG0zUlVSa2JfTVROaGtkYUg5cEV0eFB6WDk5cTg0S1hrU09mdGZDMV9QaTNudm5lTWRRNDU3LTZn?oc=5) |
| CIDRAP | Updated COVID vaccines cut risk of hospital care, heart complications, new data reveal | 2026-06-23 01:30 | [Source Link](https://news.google.com/rss/articles/CBMiuAFBVV95cUxNM2h3anZPdlowSWlBalJRSDVOWW03YnIySkZ1Y2hudHNycWhSM2ZDNnZJN19MOXkwSy1NZXBFSm1XTThvRE13ejQ1REgwR2prNEdUR0tDTkxLZEdaTXNqV0pBZHV4UTh1THVXTm5OUDJfMTJpUm1lU3kzUFpJYVE2X0xKMGs5cDA3ZGZyUEtvRm9ndzdla05wRFJGRlJNTFpGY09KOWRjaXZldVQ0ZHEtOG5tbDNPUlp3?oc=5) |
| Yahoo Lifestyle Canada | COVID Vaccine Linked to New Side Effect, Especially in Older Adults | 2026-06-23 01:30 | [Source Link](https://news.google.com/rss/articles/CBMif0FVX3lxTFBURnZQNUd2V2ZNemFVODM0cmNiSWp1a29RWUZqNnFOUk9BOVFYU01NRUlzdzJrODB0UFBlZDNvcTh4R1l2YWpucnZFQWx0cHVTSXZ6XzV6djN2ZkVPdHQycmdPMVdSbGlHVVFONVpZMXJJXzlXcWNRNXdkZnBDUkU?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-06-24/covid-vaccine-linked-to-new-side-effect-especially-in-older-adults*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*