Passage: The symptoms of the disease include a high fever with frontal headaches, followed by haemorrhagic symptoms, such as bleeding from the nasal cavity, throat, and gums, as well as gastrointestinal bleeding.  Other symptoms include vomiting, muscle stiffness, tremors, absent reflexes, and mental disturbances.An affected person may recover in two weeks time, but the convalescent period is typically very long, lasting for several months. There will be muscle aches and weakness during this period and the affected person is unable to engage in physical activities.

Question: How long is the convalescent period usually?
several months