Introduction Anthrax is a rare but serious infectious disease caused by the bacterium Bacillus anthracis. It primarily affects animals such as cattle, sheep, and goats, but humans can become infected through direct or indirect contact with sick animals or contaminated…
Introduction Typhoid fever is a serious bacterial infection caused by Salmonella enterica serotype Typhi. It is most common in areas with poor sanitation and limited access to clean water, particularly in parts of Asia, Africa, and Latin America. Typhoid fever…
Introduction Pneumonia is an infection that inflames the air sacs (alveoli) in one or both lungs. The air sacs may fill with fluid or pus, causing symptoms such as cough, fever, chills, and difficulty breathing. Pneumonia can range from mild…
Introduction Tuberculosis (TB) is a contagious bacterial infection caused by Mycobacterium tuberculosis. It most commonly affects the lungs but can also involve other parts of the body, such as the lymph nodes, bones, kidneys, and brain. TB is a significant…
Introduction Mycoplasma infection is a respiratory illness most commonly caused by the bacterium Mycoplasma pneumoniae. This infection is often referred to as “walking pneumonia” because symptoms are usually milder than those of typical pneumonia, and many people are able to…
Introduction Dysentery is a type of intestinal infection that causes severe diarrhea with blood and mucus. One of the most common causes of dysentery worldwide is infection with the bacterium Shigella. Shigella dysentery, also known as shigellosis, is highly contagious…
Introduction Legionnaires’ disease is a serious type of pneumonia caused by infection with Legionella bacteria. The illness is named after an outbreak at an American Legion convention in 1976, but cases now occur worldwide. Legionnaires’ disease most commonly affects older…
Introduction Bronchitis is an inflammation of the lining of the bronchial tubes, which carry air to and from the lungs. The condition can be either acute or chronic. Acute bronchitis is usually caused by a viral infection and resolves within…
Syphilis is a bacterial infection typically spread through sexual contact. It can cause serious health problems if left untreated, but it is curable with antibiotics, especially when detected early. Causes Syphilis is caused by the bacterium Treponema pallidum. It is…
Gonorrhea is a common sexually transmitted infection (STI) caused by the bacterium Neisseria gonorrhoeae. It can affect both men and women and, if left untreated, may lead to serious health complications. Causes Gonorrhea is transmitted through sexual contact with an…
