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More in Immunity
What Causes Dog Allergies: Proteins, Not Just Fur
Dog allergies are triggered by proteins in dander, saliva, and urine—not fur—which is why no breed is truly hypoallergenic.
What Does Thrush Mean: Symptoms, Causes & Treatment
Thrush is a common fungal infection with different symptoms depending on where it occurs. Learn how it develops, how it’s treated, and how to prevent it coming back.
What Causes Nipple Thrush? Symptoms and Treatment
Nipple thrush is caused by Candida overgrowth and often affects breastfeeding parents. Learn the symptoms, risk factors, and how it’s treated.
What Was the Spanish Flu and Why Was It So Deadly?
The 1918 flu killed tens of millions worldwide. Here’s what made it so deadly, who it hit hardest, and what we’ve learned since.
How Big Is Ringworm? Size From Start to Treatment
Ringworm patches typically start small but can grow and spread quickly. Learn what size changes to expect and how treatment helps them shrink.
How to Heal Herpes Outbreaks: Treatments That Work
Herpes outbreaks can’t be cured, but antiviral medications and lifestyle changes can shorten them and reduce how often they happen.
How to Help With Norovirus Symptoms at Home
Norovirus is miserable but usually manageable at home. Here’s how to stay hydrated, ease symptoms, and keep it from spreading to others.
What Causes Spleen Issues? Infections, Cancer & More
From infections and liver disease to autoimmune conditions and cancer, learn what commonly causes spleen problems and how they’re detected.
What Is Chlamydia Pneumoniae? Symptoms & Treatment
Learn how Chlamydia pneumoniae spreads, what symptoms it causes, how it’s treated, and its potential links to heart disease and Alzheimer’s.
Is the Tdap Vaccine Safe? Side Effects & Risks
Tdap is considered safe for most people, including pregnant women. Learn about common side effects, rare risks, and who should avoid it.
What Is Meningococcal Disease? Causes, Risks & Treatment
Meningococcal disease is a serious bacterial infection that can progress rapidly. Learn how it spreads, who’s most vulnerable, and how vaccines can help prevent it.
Is the HPV Vaccine Effective Against Cancer?
The HPV vaccine strongly reduces cervical and other cancers, especially when given early. Here’s what the evidence shows about effectiveness, duration, and safety.
How to Combat Allergies: Meds, Home Tips & More
From timing your meds right to filtering indoor air, here’s a practical guide to managing allergies with treatments that actually work.
What Is the Menactra Vaccine? Uses and Side Effects
Menactra protects against four types of meningococcal disease. Learn who should get it, when to get it, and what side effects to expect.