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'HIV-negative' serosorters increasing their risk of infection because of prevalence of undiagnosed, acute HIV infections

Small number of individuals with drug-resistant HIV having unprotected sex

Drinking alcohol before sex increases risk of HIV infection

HIV-positive men may use 'POZ parties' to reduce risk of spread of HIV, but other health risks may be involved

Efforts needed to improve diagnosis of primary HIV infection to control spread, say UK researchers

Genital shedding of HIV fluctuates with a woman's menstrual cycle

Hormonal contraceptive associated with increased risk of HIV infection

Hormonal contraceptives increase shedding of HIV infected cells in the cervix

Hormonal contraceptives increase risk of HIV infection