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Genital ulcers (macro or microscropic) are a privileged
entry point for HIV. Local inflammatory reaction drains in
defense cells which, at the same time, serve as host cells
for the virus.
Many factors explain the STD outbreak: social changes,
promiscuity in wildly expanding towns, migrations, insufficient
health services
the role of high risk groups for STD transmission is
known since the early 1970s
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