Introduction Avian influenza, commonly known as bird flu, is an infectious disease caused by influenza viruses that primarily affect birds. In rare cases, certain strains of avian influenza can infect humans and other animals, sometimes leading to severe illness. Human…
Introduction Reye’s syndrome is a rare but serious condition that causes sudden swelling in the liver and brain. It most often affects children and teenagers recovering from a viral infection, such as the flu or chickenpox. The exact cause is…
Introduction Echinococcosis, sometimes referred to as hydatid disease or infection with the dwarf tapeworm, is a parasitic disease caused by tapeworms of the genus Echinococcus. The most common species affecting humans are Echinococcus granulosus (causing cystic echinococcosis) and Echinococcus multilocularis…
Introduction Dengue fever is a mosquito-borne viral infection that occurs in tropical and subtropical regions around the world. It is caused by the dengue virus, which is transmitted to humans through the bite of infected Aedes mosquitoes, primarily Aedes aegypti…
Introduction Diphtheria is a serious bacterial infection that primarily affects the mucous membranes of the throat and nose. It is caused by the bacterium Corynebacterium diphtheriae. Although rare in countries with widespread vaccination, diphtheria can be life-threatening if not treated…
Introduction Ebola virus disease (EVD), commonly known as Ebola, is a rare but severe and often fatal illness caused by infection with the Ebola virus. Outbreaks have primarily occurred in sub-Saharan Africa, but the disease is a global health concern…
Introduction Yellow fever is a serious viral infection transmitted by mosquitoes, primarily in parts of Africa and South America. The disease gets its name from the jaundice (yellowing of the skin and eyes) that can occur in severe cases. While…
Introduction Human Immunodeficiency Virus (HIV) is a virus that attacks the body’s immune system, specifically the CD4 cells (T cells), which help the body fight infections. If left untreated, HIV can lead to Acquired Immunodeficiency Syndrome (AIDS), a condition in…
Introduction Bronchiolitis is a common respiratory infection that affects the small airways (bronchioles) in the lungs, primarily in infants and young children under two years of age. It is often referred to as obstructive bronchitis in this age group due…
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…
