Updated vaccines target an evolving virus as health experts document effects on the brain, nerves, heart, and other organs
By SPEAKIN’ OUT NEWS
HUNTSVILLE, Ala. — COVID-19 can begin with congestion, a sore throat or a cough. But for some Alabama families, its consequences extend far beyond respiratory symptoms, affecting memory, sensation, taste, smell and the ability to manage everyday life.
As updated vaccines become available for the 2026–2027 season, adults — particularly those 50 and older or living with chronic conditions — have reason to review their protection with a health care professional.
The Centers for Disease Control and Prevention identifies increasing age as a major risk factor for severe COVID-19, with risk rising substantially after 65. Diabetes, heart disease, chronic lung disease, and weakened immunity can add to that risk.
An evolving virus, an updated vaccine
SARS-CoV-2, the virus that causes COVID-19, continues to evolve. Genetic changes produce variants that can differ in how they spread and how effectively existing immunity recognizes them. A new variant does not automatically mean more severe illness.
This season’s vaccines target XFG, a descendant of the Omicron JN.1 lineage. The Food and Drug Administration selected that formulation to more closely match circulating viruses.
Pfizer-BioNTech and Moderna vaccines use messenger RNA to provide temporary instructions for making a recognizable viral protein. The Novavax vaccine, now manufactured by Sanofi, supplies protein pieces directly. Both approaches train immune defenses; neither can cause COVID-19.
CDC’s current guidance recommends a 2026–2027 vaccine for adults 18 and older. FDA-approved indications cover adults 65 and older and younger people with qualifying risk conditions; CDC identifies vaccination outside those indications as off-label use. Readers should confirm eligibility, timing, and product choice with their clinician or pharmacist.
Vaccination helps protect against severe outcomes and can reduce the risk of long COVID, although it cannot guarantee that infection or lasting symptoms will be prevented.
More than mucus and breathing problems
COVID-related complications can involve the lungs, heart, kidneys, brain, blood vessels, and other body systems. CDC reports that some patients develop new or worsening heart conditions, blood clots, diabetes, or neurological problems after infection.
Long COVID can persist for months or years. Symptoms may include exhaustion, difficulty concentrating, headaches, sleep disruption, dizziness, digestive problems, and changes in taste or smell. These effects can interfere with work, caregiving and independence.
The nervous system connection
The nervous system includes the brain, spinal cord and nerves throughout the body. COVID’s neurological effects do not necessarily mean the virus directly infects every affected structure.
National Institutes of Health researchers describe several possible pathways, including immune activation, inflammation, and injury to blood vessels in the brain.
Peripheral nerve symptoms can include tingling or altered sensation. People with existing neuropathy should report new or worsening symptoms rather than assume every change is caused by COVID. NIH research has also documented autonomic nervous system disturbances, which regulate functions such as heart rate and blood pressure.
Published case reports have described spinal cord inflammation, called transverse myelitis, after COVID infection. These are uncommon complications; case reports do not establish that COVID routinely damages the spinal cord.
For people with epilepsy, illness, fever, dehydration, and disrupted sleep can trigger breakthrough seizures. The Epilepsy Foundation advises contacting the treating team when seizures change during COVID illness. Infection does not cause increased seizures in everyone with epilepsy.
A prevention conversation worth having
Adults 50 and older should take vaccination discussions seriously, especially when chronic health conditions are present. People with seizure disorders should also discuss managing a possible post-vaccination fever. Rare vaccine risks, including myocarditis, should be considered alongside the risks of infection.
Persistent symptoms deserve medical evaluation. For Alabama readers, the message is clear: recovery from a cough does not always mark the end of COVID’s effects.