Health Topics

Find information on many health topics, listed A to Z.

Infectious Diseases

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful, but some organisms under certain conditions may cause disease.

In The News

'COVID-19: What's New and What's Next' community forum

What does it mean to move from pandemic to endemic, and is society there yet? Get the latest COVID-19 information and learn what life will be like following the pandemic.

March 15, 2022
COVID-19 testing volume increase expected

La Crosse testing doubled on Monday, Dec. 27. Getting vaccinated and wearing a mask in public are key to reducing infection rates.

December 28, 2021
Additional COVID-19 boosters begin in Southwest Wisconsin

Options for COVID-19 booster shots have expanded to include Moderna and Johnson & Johnson vaccines this week.

October 26, 2021

From The Blog

Monkeypox on torso and arm

What you need to know about monkeypox

The CDC is tracking multiple clusters of monkeypox. A Mayo Clinic expert explains what this virus is, how it's transmitted and what you need to know.

May 25, 2022
Kids and parents doing homework and looking at a cellphone

COVID-19 booster vaccinations extended to kids 5–11

Vaccination continues to be a safe, effective way to prevent serious illness and hospitalizations from COVID-19. Here's what parents of children ages 5–11 need to know.

May 24, 2022
Grassy, wooded path

Taming ticks

While you're enjoying the outdoors, ticks are looking for a ride — and a meal. Ticks survive on blood from humans and animals, and can transmit disease. Learn how to tame these unwelcome hitchhikers.

Katie Clubb MD By Katie Clubb May 11, 2022
Janssen vaccine vials

What to know about FDA limits on use of J&J COVID-19 vaccine

Because of an elevated, but low, risk of blood clots associated with the J&J COVID-19 vaccine, the FDA has limited its use. A Mayo Clinic expert explains what the latest recommendation means for you.

May 10, 2022
Person with grey beard, wearing a denim shirt

Shingles: Not just a band of blisters

If you've ever had chickenpox, you may be susceptible to shingles. This common condition causes a painful, blistered rash. Learn about prevention and treatment.

Jeffery Wheeler MD By Jeffery Wheeler April 13, 2022
Senior hiker with backpack

Second COVID-19 booster for those 50 and older, immunocompromised

The Centers for Disease Control and Prevention has expanded eligibility for a second COVID-19 booster. Get the details with this Q&A.

April 8, 2022
Looking for keys

Dealing with 'brain fog' from long COVID-19

One symptom of post-COVID syndrome is described as "brain fog." Learn what you can do if you have short-term memory loss, confusion and difficulty concentrating after a COVID-19 infection.

March 29, 2022
Person with dermal piercing and neck tattoo

Endemic vs. epidemic vs. pandemic: What you need to know

The drop in COVID-19 cases may lead you to think the pandemic is ending. While stats are headed in the right direction, an infectious diseases expert explains why it's too early to say it's over.

March 10, 2022
Wearing glassses and grey knit sweater

Updated COVID-19 vaccine recommendations

The Centers for Disease Control and Prevention issued interim recommendations for a shortened interval to the booster, or fourth, dose of mRNA vaccines for immunocompromised people among other updates. Get the details.

February 15, 2022
Lifting pink suitcase at airport

COVID-19 considerations for your winter travel getaway

If you're planning a winter vacation, you'll need to know how the COVID-19 pandemic affects your plans. Follow these guidelines to safely enjoy your time away.

February 10, 2022
Child with arm around parent shoulder

Helping kids struggling with the ever-changing COVID-19 pandemic

Children are once again facing disruption to daily routines due to COVID-19 cases surging. Get advice on how to support kids having difficulty coping with the changes.

February 4, 2022
Syringe fill from vial

Omicron BA.2 subvariant: What Mayo Clinic COVID-19 experts know

Scientists are tracking the rise in cases of omicron BA.2, which they say is even more contagious than the original omicron variant.

February 3, 2022