Darwin Zerpa, 29, an HIV-positive Venezuelan who works as a counsellor for charity Aids Healthcare Foundation in Peru. Photograph: Dan Collyns
By day it is one of Lima’s grandest squares. By night the Plaza San Martín becomes a magnet for nightclubbers and bag-snatchers, as well as a haunt for male sex workers and their clients.
It is here just before midnight that 29-year-old Darwin Zerpa and other volunteers set up shop. Pulling up in an out-of-service ambulance and folding out a table on the pavement, they mark out a spot where passersby can get HIV finger-prick test results in less than 10 minutes. Read More
