But new images of the virus show us what it looks like up close. These images were made using scanning and transmission electron microscopes ... which include fever, cough and shortness of breath ...

Being tiny doesn't stop viruses, bacteria, certain insects and other microscopic critters from causing all sorts of misery. But under the microscope ... malaria, yellow fever and West Nile ...

Dengue fever is a severe ... the protein structures come together. Most viruses have spikes on their surface when looked at under electron microscope. These are used as part of the attachment ...