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.
Signs of fall and winter are appearing, temperatures are cooling and cases of flu, strep throat and RSV are increasing. Read five things to know during this year's upper respiratory illness season.
Upper respiratory infections are common at this time of year. Be prepared for seasonal cases of RSV by learning about the vaccines, how to manage symptoms at home and when to seek care.
New COVID-19 vaccines are designed to better protect against variants and prevent serious illness. Read what a Mayo Clinic expert shares about who should receive the updated vaccine.
Intense rainfall and flooding lead to many areas playing host to standing water. When water accumulates, it can pose significant health and safety risks. Read six tips to help you stay safe.
A Mayo Clinic expert shares what you need to know about the H5N1 avian influenza outbreak and why the public health risk remains low. Find out the steps to take to ensure food remains safe.
Measles was declared eliminated from the U.S., but cases are returning. Get answers to common questions about measles, and read why vaccination is the best defense against the spread of the virus.
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.
Did you know influenza is the most common, vaccine-preventable disease for travelers? Be a smart traveler, and talk to your healthcare team about flu vaccination before your trip.
If you're planning international travel, checking in with a travel medicine specialist can help ensure you're informed, prepared and protected against possible health risks.
Anyone can be infected with the highly contagious illness norovirus. Follow these tips to decrease your risk of getting the viruses that cause gastroenteritis, often referred to as the stomach flu.
For parents, the symptoms of a viral illness are worrisome in infants and young children. Learn about a lower respiratory viral infection called bronchiolitis and symptoms to watch for in children.
Common myths about the flu may keep you from taking the necessary steps to protect yourself from the illness. Learn the truth about lowering your risk — starting with the annual flu vaccine.