Walking pneumonia is a lung infection that is often linked to mild symptoms, that bed rest, or a hospital stay will not be necessary. Someone with the infection may not feel the need to stay home from work or school, thus may be out walking around. That's how the illness got its name.
Dengue viruses spread to people through the bite of an infected Aedes species mosquito: Aedes aegypti and Aedes albopictus. Dengue is the fastest spreading vector-borne disease in the world endemic in 100 countries.