Immunity Page 246
More in Immunity
Is Ringworm Contagious? How Long and Who’s at Risk
Ringworm spreads easily through people, pets, and surfaces. Learn how long it stays contagious, who’s most at risk, and how to stop it spreading at home.
Is a 101.2 Fever Bad? Symptoms and When to Worry
A 101.2°F fever is usually mild, but age and symptoms matter. Learn when to treat it at home and when it’s time to call a doctor.
How Long Does RSV Last? From Exposure to Recovery
RSV typically lasts 1–2 weeks, but timelines vary by age. Here’s what to expect from first exposure through recovery.
What Can Lupus Cause? Organs and Systems Affected
Lupus can affect nearly every part of the body. Learn how it impacts the kidneys, heart, brain, lungs, skin, and more.
What Does Staphylococcus Aureus Cause?
Staphylococcus aureus can cause a wide range of illnesses, from skin infections and food poisoning to serious conditions like sepsis and pneumonia.
Is Hepatitis A Bloodborne? How It Actually Spreads
Hepatitis A spreads through contaminated food and water, not blood. Learn how the virus actually travels and how to protect yourself.
How Long Is Pink Eye Contagious? Viral vs. Bacterial
Viral pink eye can stay contagious for up to two weeks, while bacterial clears faster with antibiotics. Here’s how to know when you’re no longer spreading it.
What Does Shingles Come From and What Triggers It?
Shingles comes from the chickenpox virus hiding in your nerves for decades. Learn what causes it to reactivate and how to reduce your risk.
Is 99°F a Normal Temperature or a Low-Grade Fever?
A temperature of 99°F usually isn’t a fever, but it’s not always nothing either. Here’s what that reading actually means for your health.
How Do Vaccines Work? A Step-by-Step Diagram
Learn how vaccines trigger your immune system, from the first injection to lasting memory cells that protect you from future infection.
How to Get a High Temperature Down: What Actually Works
Learn which fever-reducing methods are backed by evidence, from medication options for adults and children to hydration and when to see a doctor.
What Diseases Are Asymptomatic? Common Silent Illnesses
Many serious conditions like diabetes, glaucoma, and hepatitis C cause no symptoms. Learn which diseases often go undetected and why regular screening matters.
Is Giardia a Worm? Parasite vs. Worm Explained
Giardia is often mistaken for a worm, but it’s actually a single-celled parasite. Learn what it is, how it spreads, and how it’s treated.
Is Pneumonia Caused by Bacteria, a Virus, or Fungus?
Pneumonia can be caused by bacteria, viruses, or fungi. Learn how doctors tell them apart and why the cause determines the right treatment.