Work in AIDS control in East Africa revealed widespread lay health bel
iefs concerning HIV infection and AIDS amongst health workers and memb
ers of the general population at both lower and higher risk of infecti
on. The beliefs were often factually incorrect and undermining to AIDS
control in the field of information, education and communication (IEC
). The beliefs were conveyed informally but their origins could often
be traced. Local media were important sources. The beliefs were powerf
ul, persistent and resistant to conventional educational methods. Thei
r prevalence and type changed with time in different groups. A model o
f how the beliefs came to be generated is proposed and reasons suggest
ed for their persistence and strength. A current programme for counter
ing the beliefs is described. An additional important group of policy
and scientific beliefs were also identified amongst policy makers and
scientists. It is noted that these phenomenon are international and no
t confined to Africa.