“…Of particular interest is the remaining patient (Case 1), who had a negative result three days after the onset of fever, but positive findings when the test was repeated on the 12th day of fever (titre after guineapig absorption 1:160). A positive result from the Paul-Bunnell test appears to be unusual in the syndrome, only one example being found in the 33 previously reported cases (Holswade et al, 1963).…”