These viruses seem to disappear after early infection, the disease appearing only after several years.

Frank said that an early infection had set back Jefferson's rehabilitation by about a week.

He and his younger sister Emilia both showed signs of early tubercular infection.

The danger is that a false negative, which is common in early infection, could lead to needed treatment being delayed.

Most severe losses are from early infections and can be as high as 50%.

Treatment is effective in early or light infections.

As mentioned before, leukocytosis and lymphadenopathy are associated with early infection.

Treatment for early infection exists but is uneconomical and not authorized as such, current drugs have severe side effects.

Until now there has been no good way of detecting early and low-level infections.

New generations of tests can largely eliminate either the long waiting time for results, or the failure to find early infections.