Objective: To determine the factors that influence condom use among pr
ostitutes and their clients in The Gambia. Design: A cohort of 181 pro
stitutes working in seven bars and several rural markets in The Gambia
were monitored daily for 14 months. A sample of 747 clients of these
prostitutes was also questioned. Main outcome measure: Proportion of s
exual contacts for which a condom was used. Results: Data on 24181 sex
ual contacts reported by the prostitutes indicated condom use varied a
ccording to type of partner (from 84% with clients to only 4% with reg
ular partners). Condom use with clients varied according to location (
from 91% in high-class bars to 59% in rural markets), decreased from 9
1% with the first client of the evening to 37% with the tenth client,
and from 75% with clients paying higher charges (> D19) to 52% with th
ose paying lower charges (< D20). Condom use was not related to the so
cio-demographic characteristics of the prostitutes. Clients reported l
ower condom use than prostitutes. Clients aged 20-24 years were least
likely to use condoms, while white collar workers, traders, and those
paying higher charges, were more likely to use condoms. Conclusions: T
he level of condom use in this cohort of prostitutes was high but not
consistent. Condom use was determined more by the type of establishmen
t and the characteristics of clients, than by any fixed tendency among
the prostitutes. Thus, education campaigns should be directed as much
to clients as to prostitutes. In The Gambia, 'lower-class' bars and t
hose in rural areas where prostitutes work should be a priority target
.