Yellow fever presents as a serious and potentially fatal transmissible illness. Carried mainly through the bite of infected mosquitoes, this disease affects individuals globally, particularly in tropical and subtropical areas. Signs vary widely from mild to severe, such as fever, headache, muscle aches, nausea, vomiting, and jaundice. In serious ca

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, breathing problems, and sharp pains in the chest. Pneumonia can be caused by a variety of organisms, including bacteria, viruses, and f