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How long can athlete's foot fungus linger in shoes?

Warm, damp shoes can harbor fungus well after a skin infection clears. Fresh socks, antifungal powder, rotation, and retiring old shoes are all important.

Video: What you should know about germs

Your immune system constantly defends you from harmful germs like bacteria and viruses, but your body also hosts trillions of helpful microbes-your microbiome-that live on your skin, in your gut, and elsewhere. These "good" germs help digest food, make vitamins, protect you from harmful invaders, and help regulate inflammation.

What to do about sinusitis

Sinusitis occurs when blocked sinuses cannot drain and the backed-up mucus gets infected. The simplest and often most effective treatment is daily nasal irrigation. It can also help to drink a lot of water, inhale steam, and sleep with the head elevated.

Is mono a kids' virus only?

The Epstein-Barr virus that causes mononucleosis (mono) usually infects people during their childhood or the teenage years. The virus stays with people for life.

Can pernicious anemia be treated with vitamin B12 pills instead of injections?

Monthly vitamin B12 shots for pernicious anemia can be a hassle. Explore whether high‑dose vitamin B12 pills or other non‑injection treatments might be an option.

What is oral thrush and why do I keep getting it?

Recurring white patches or odd tastes in the mouth can signal yeast infection known as thrush. Yeast overgrowth may be tied to dentures, antibiotics, or immune problems.

Does a lingering cough mean I still have an infection?

A cough that lingers for weeks after a cold can be confusing. Learn why it can persist, what else might be going on, and when to see your doctor.

Can I safely get the flu shot if I am breastfeeding?

Breastfeeding moms often worry about vaccines and their babies' safety. Explore how flu shots and nasal spray immunizations fit into postpartum protection.

How does a cold virus spread from person to person?

Cold germs can leap from one person to the next in more ways than you might think. Learn the everyday habits that increase spread.

Measles is making a comeback: Can we stop it?

In the US, widespread vaccination halted the ongoing spread of measles more than 20 years ago, but recent outbreaks have flared in over 20 US states, leading to hospitalizations and at least two deaths. Measles is highly preventable - here's what you need to know.

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