Yellow fever is a a serious and potentially fatal infectious illness. Carried mainly through the bite of infected mosquitoes, this condition affects people globally, particularly within regions with a tropical climate and subtropical areas. Manifestations can range from mild to severe, such as fever, headache, muscle aches, nausea, vomiting, and ja

Pneumonia is a/happens to be/presents as an infection that inflames the air sacs in one or both lungs. These air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, difficulty breathing, and aches in your chest. Pneumonia can be caused by a variety of organisms, including bacteria, viruses, and fung