Mar 23, 2023 · Overview The H1N1 flu, sometimes called swine flu, is a type of influenza A virus. During the 2009-10 flu season, a new H1N1 virus began causing illness in humans. It was …

Gonorrhea bacteria can infect the urethra, rectum, female reproductive tract, mouth, throat or eyes. Gonorrhea is most commonly spread during vaginal, oral or anal sexual activity. But …

Jan 23, 2021 · Dr. Andrew Badley discussing if you can infect someone after receiving the COVID-19 vaccine.

Feb 9, 2023 · Learn about the symptoms, causes, treatment, and prevention of this infectious disease transmitted to humans through mosquito bites.

Mar 6, 2025 · Chagas disease can cause a sudden, brief illness. This type of illness is known as acute. Or it can become a long-lasting, chronic condition. Both stages can be free of …

Apr 26, 2025 · A shingles vaccine uses only part of the varicella-zoster virus, so you can't infect others.

Jul 24, 2025 · Ascariasis symptoms depend on the amount of roundworms in your body, which organs are infected and your immune system health. Most people have no symptoms at all. …

Jun 8, 2024 · Causes Influenza is caused by viruses that infect the cells that line the nose, throat and lungs. Flu virus particles spread through breath, saliva, mucus or stool. Bird flu in humans …

Oct 21, 2025 · The virus that causes COVID-19 can infect some pets. Cats, dogs, hamsters and ferrets have caught this coronavirus and had symptoms. It's rare for a person to get COVID-19 …

May 15, 2024 · Learn about symptoms, treatment and prevention of this common infection among older adults that causes nails to discolor and crumble.