New studies by several groups indicate that everyone who has AIDS antibodies has the virus in their macrophages.

A false positive result occurs when a test signaled the presence of AIDS antibodies when none were there.

Scientists now say that when properly conducted the test can quite accurately determine the presence of AIDS antibodies.

In this period, a baby may carry AIDS antibodies from the mother's system, but not necessarily have the virus.

They are required to take an immediate test for the AIDS antibody and within six months a follow-up test.

The rest of the 988 babies carry the AIDS antibodies but not the virus itself.

During followup periods ranging from only 4 to 12 weeks, 6 percent of the patients developed AIDS antibodies.

Officials say 306 people have tested positive for AIDS antibodies, an indication of the presence of the virus.

Of those, 82, or 13 percent, tested positive for AIDS antibodies.

The rule would not apply to workers who had tested positive for AIDS antibodies.