2023年2月4日 · For example, bacteria in the intestines help digest food. But bacteria can cause illness. For example, bacteria that travel from the anus into the urinary tract can cause a urinary tract infection. People can come into contact with bacteria from other people, food or the environment. These bacteria can cause illnesses. Some examples are: Strep ...

2024年4月3日 · Virus vs bacteria: Any difference in symptoms? Symptoms usually reflect the area of the body infected, and the infecting organism. For example, a bacterial infection of the skin may cause a discharge, swelling, pain and redness in a certain area, whereas a viral infection, such as hepatitis C may cause abdominal pain, joint pain, nausea or ...

2024年3月5日 · Not all bacteria are harmful. Some bacteria that live in the body are helpful. For instance, some bacteria that live in the intestines, help digest food, destroy disease-causing organisms and provide nutrients. But bacteria may also cause illness. Many disease-causing bacteria make powerful chemicals called toxins that damage cells and make you ...

2022年2月18日 · Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis. Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS. Fungi. Many skin diseases, such as ringworm and athlete's foot, are caused by fungi.

2023年5月24日 · This is the swelling and build-up of fluids in the space behind the eardrum. It may be caused by a virus or bacteria. Typical signs and symptoms include earaches or the return of a fever following a common cold. Asthma. A cold can trigger wheezing, even in people who don't have asthma. For people with asthma, a cold can make it worse. Sinusitis.

2020年6月13日 · Bacteria. The most common cause of bacterial pneumonia in the U.S. is Streptococcus pneumoniae. This type of pneumonia can occur on its own or after you've had a cold or the flu. It may affect one part (lobe) of the lung, a condition called lobar pneumonia. Bacteria-like organisms. Mycoplasma pneumoniae also can cause pneumonia.

2022年3月4日 · Noroviruses are highly contagious. That means the norovirus infection can easily spread to others. The virus is shed in stool and vomit. You can spread the virus from the time you first have symptoms of illness until several days after you recover. Noroviruses can stay on surfaces and objects for days or weeks. You can get norovirus infection by:

2024年3月15日 · Using an antibiotic for a virus, like a cold or the flu: will not cure the virus; won’t help you feel better; will not prevent others from catching your virus; will be a waste of your money. Many bacterial infections do require an antibiotic; however, the type of antibiotic will vary based on the type of infection and bacteria. An antibiotic ...

2022年4月29日 · Salmonella infection (salmonellosis) is a common bacterial disease that affects the intestinal tract. Salmonella bacteria typically live in animal and human intestines and are shed through stool (feces). Humans become infected most frequently through contaminated water or food. Some people with salmonella infection have no symptoms.

Syphilis is an infection caused by bacteria. Most often, it spreads through sexual contact. The disease starts as a sore that's often painless and typically appears on the genitals, rectum or mouth. Syphilis spreads from person to person through direct contact with these sores.