The participants are in quarantine at the isolation centre of the Orientation Camp in Sibre, near Jalingo, the state capital.
NYSC camps opened nationwide on Tuesday. Three corps members tested positive on resumption day and the fourth on Wednesday.
But the isolation centre is not conducive; it has no electricity or medication, Daily Post reports.
On Thursday, the news outlet was informed that the camp authority was yet to return with another sample taken from the cases.
“They have been giving all sorts of excuses. Now they are saying the testing machine in Jalingo is not working. That they have to take the samples to another place.
“What is even more annoying is that camp officials told other corps members at the daily assembly that only two not four tested positive. This is Nigeria”, a source said.
Before camps were opened, the federal government and the NYSC management repeatedly claimed that infected corps members would get adequate care.
Last December, no fewer than 11 cases were recorded at the Taraba camp.
Commissioner for Health, Innocent Vakkai, said all were isolated in a hotel due to vandalisation of the state isolation centre by hoodlums during the End SARS protest.
In 2020, a total of 731 Batch B Stream corps members tested positive.
The figure was from 35,419 participants nationwide.
Photos of Taraba NYSC Orientation Camp Isolation Centre courtesy of Daily post below;