She founded the Women and Children HIV program at Stroger Hospital, which serves 1,200 women, partners and children affected by HIV. Dr. Cohen is a leading HIV researcher. She's a principal investigator in the Women's Interagency HIV Study, the largest ongoing study investigating the impact of HIV on women. She has authored dozens of publications on women and HIV and is the recipient of numerous awards. Currently, Dr. Cohen is involved in an initiative to provide rapid HIV testing in all Illinois delivery rooms. Since 2004 she had traveled to Rwanda to offer HIV treatment and primary care to women infected with HIV during the 1994 genocide.