So early stage lasts about two weeks. And this is when the person actually feels sick. This is when the person experiences flulike symptoms. For example, they have a high fever, they have different types of body aches, they have headaches. And this is when inside the block there's a high level of these viral agents, the HIV agent. So basically the individual experiences flulike symptoms, fever, aches and so forth and has a high level of virus in the body.