Immunity Page 327
More in Immunity
What Causes Pet Allergies? It’s Not Just the Hair
Pet allergies are triggered by proteins in saliva, skin, and urine—not fur. Learn what really causes reactions and why no breed is truly hypoallergenic.
How to Prevent Eye Allergies at Home and Outdoors
Practical ways to reduce eye allergy symptoms at home and outside, from managing dust mites to choosing the right contact lenses and eye drops.
Does Soap Kill Germs or Just Remove Them?
Soap both kills and removes germs depending on the type. Learn how it actually works and why technique matters more than which soap you choose.
Are Boogers Bad to Eat? The Real Risks, Explained
Eating boogers is mostly harmless, but the real concern is nose-picking itself. Here’s what the science actually says about this common habit.
What Was the Worst Disease in History, Ranked
From the Black Death to HIV/AIDS, history’s deadliest diseases shaped humanity in different ways depending on how you measure the damage.
Why Do Older People Get Shingles More Often?
Shingles comes from the chickenpox virus you had as a kid. Here’s why aging weakens the immune control that keeps it dormant—and what you can do about it.
Does CMV Cause Cold Sores? CMV vs. HSV Explained
Cold sores are caused by HSV, not CMV. Learn how these two herpesviruses differ and why CMV rarely causes oral symptoms in healthy people.
Can HIV Be Cured Early? Treatment vs. a True Cure
Early HIV treatment can suppress the virus, but a true cure remains rare. Here’s what current science can and can’t do.
Is It Normal to Get Sick Every Month? Causes & Fixes
Getting sick every month isn’t always bad luck. Learn the most common reasons it happens and what you can actually do about it.
Is It Possible to Get COVID Back to Back?
Yes, you can catch COVID twice in a short period. Learn what counts as reinfection, who’s most at risk, and what to expect the second time around.
Why Is Bird Flu So Deadly: What Happens in the Body
Bird flu can be deadly because of where it strikes and how the immune system responds. Here’s what actually happens inside the body.
What Causes Brain Inflammation? Infections, Diet, and More
Brain inflammation can stem from infections, diet, pollution, and more. Learn what triggers it and how chronic neuroinflammation affects long-term brain health.
What Does Rabies Do to a Human’s Brain and Body?
Rabies hijacks your nervous system in a predictable but devastating way. Here’s what the virus actually does to the brain and body, and why timing is everything.
What Virus Is Going Around New Jersey Now?
Flu is fading in New Jersey, but RSV and COVID-19 are still circulating. Here’s what’s going around and how to protect yourself.