Pneumonia is a common respiratory infection that inflames the alveoli. These pockets can be laden with fluid or pus, causing a persistent cough, fever, difficulty breathing and chest pain. Pneumonia can range from mild to life-threatening. Pneumonia occurs when bacteria, viruses, or fungi invade th

Yellow fever is a serious viral infection transmitted through the bite of infected insects. Primarily found in tropical and subtropical regions of Africa and South America, this life-threatening illness can cause intense symptoms such as high temperature, yellowing of the skin, muscle aches, and vom