What is the part of that blood attacked when you have dengue?

The platelets are the part of the blood attacked when you have dengue. Platelets are small, colourless cells that help the blood to clot. They are made in the bone marrow and have a lifespan of about 10 days. When you have dengue, the virus invades the bone marrow and damages the cells that make platelets. This can lead to a decrease in the number of platelets in the blood, which can cause bleeding problems.