3. Joint Ache
The same mechanism that causes muscle ache is also responsible for the development of joint ache symptoms in those people infected with the yellow fever virus. As antibodies attach to the virus cells, they block the effects of the infection. However, the immune system is not done yet and launches the second phase of its attack on the invading pathogen by converting T-cells into white blood cells to eliminate mucosal cells affected by the yellow fever virus.
During this process, the white blood cells start to produce interleukins and cytokines to recruit more white blood cells to the infection site, as well as kill off any abnormal cells affected by the virus. Interleukins and cytokines are responsible for your joint ache symptoms, as well as your muscle and headaches.
Since there is no cure available for yellow fever, affected individuals will need managed care to ensure their symptoms don’t progress – causing the infected person to experience delirium and seizures that could lead to the development of a coma.